STM1061
Low Power Voltage Detector
Features
Figure 1.
Packages
Factory-trimmed Voltage Thresholds in 0.1V Increments from 1.6 to 5.5V 2% Voltage Threshold Accuracy Operating Voltage 0.7 to 6.0V Open Drain Output Low Supply Current of 0.9A (typ) Guaranteed OUT Assertion Down to VCC = 0.7V Power Supply Transient Immunity Available in SOT23-3 and SOT323-3 (SC70-3) packages Operating Temperature 40 to 85C.
1. Contact local sales office for availability. SOT323-3, SC70-3 (W) (1) SOT23-3 (WX)
July 2006
Rev 4
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ww w.st .com 1
Contents
STM1061
Contents
1 2 Summary Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 2.2 2.3 OUT (Open Drain) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 3.2 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Negative-Going VCC Transients and Undershoot . . . . . . . . . . . . . . . . . . . . 8
4 5 6 7 8 9
Typical Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Maximum Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 DC and AC Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Package Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Par t Numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2/23
STM1061
List of tables
List of tables
Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Operating and AC Measurement Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 DC and AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 SOT23-3 3-lead Small Outline Transistor Package Mechanical Data . . . . . . . . . . . . . . . 18 SOT323-3 (SC70-3) 3-lead Small Outline Transistor Package Mechanical Data . . . . . . 19 Ordering Information Scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Factory-Trimmed Thresholds with Marking Description . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Document Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
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List of figures
STM1061
List of figures
Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Logic Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 SOT23-3 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 SOT323-3 (SC70-3) Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 N-C hannel Open Drain Output Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 STM1061N Active-Low, Open Drain Hardware Hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Supply Current vs. Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Supply Current vs. Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Output Detect Delay Time vs. Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Output Release Delay Time vs. Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Maximum Transient Duration vs. Reset Threshold Overdrive . . . . . . . . . . . . . . . . . . . . . . 11 Detect, Release Voltage vs. Ambient Temperature for V TH = 3.4V . . . . . . . . . . . . . . . . . 11 N-channel Driver Output Current vs. V DS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 N-channel Driver Output Current vs. Input Voltage for V DS = 0.5V . . . . . . . . . . . . . . . . . . 12 AC Testing Input/Output Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Voltage Timing Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 SOT23-3 3-lead Small Outline Transistor Package Outline. . . . . . . . . . . . . . . . . . . . . . . 17 SOT323-3 (SC70-3) 3-lead Small Outline Transistor Package Outline . . . . . . . . . . . . . . 19
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STM1061
Summary Description
1
Summary Description
The STM1061 low power voltage detector provides monitoring of battery, power-supply, and regulated system voltages. A precision voltage reference and comparator monitors the V CC input and compares it with a specified voltage threshold condition. When V CC falls below a specified trip point threshold, the output (OUT) is forced low and remains asserted as long as the VCC input remains below VTH + hysteresis (VHYST). The STM1061 device is guaranteed to output the correct logic state for VCC down to 0.7V. They are also designed to ignore fast transients on VCC. This small, low power device is ideal for portable applications and is available in spacesaving SOT23-3 and SOT323-3 (SC70-3) packages. Figure 2. Logic Diagram
VCC
STM1061
OUT
VSS
AI10477
Table 1.
OU T VCC VSS
Signal Names
Open Drain Active-Low Output Supply Voltage Ground
Figure 3.
SOT23-3 Connections
OUT VSS
1 2
3
VCC
AI10478
5/23
Summary Description Figure 4. SOT323-3 (SC70-3) Connections
STM1061
VSS OUT
1 2
3
VCC
AI10479
Figure 5.
N-Channel Open Drain Output Block Diagram
VCC
R1 + R2 VREF
OUT
VSS R3
AI10482
Figure 6.
STM1061N Active-Low, Open Drain Hardware Hookup
DC/DC Converter VIN VSS R VCC + 3.6V STM1061N (Open Drain) VCC VSS OUT VOUT MCU Suspend VSS VOUT Regulated 3V
AI10484a
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STM1061
Pin Descriptions
2
Pin Descriptions
See Figure 2 on page 5 and Table 1 on page 5 for a brief overview of the signals connected to this device.
2.1
OUT (Open Drain)
This is the Open Drain Output. It goes low when V CC drops below VTH, and remains low as long as V CC is below VTH + V HYST.
2.2
VC C
This is the Supply voltage and input for the Voltage Detector.
2.3
VSS
Ground, VSS, is the reference for the power supply. It must be connected to the system ground. Table 2. Pin Functions
Pin SOT23-3 1 3 2 SOT323-3 (SC70-3) 2 3 1 N a me Function
OU T VCC VSS
Active-Low Open Drain Output Supply Voltage Ground
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Operation
STM1061
3
3.1
Operation
Output
The STM1061 Voltage Detector monitors system voltages from 1.6 to 5V in 100mV increments. The detector is designed to ignore fast transients on VCC and has a voltage hysteresis (VHYST). The STM1061 asserts an output signal (OUT) whenever VCC goes below the Voltage Detect Threshold (VTH). The output signal (OUT) stays asserted until VCC goes above the Voltage Detect Release (VTH+). Output voltage (VOUT) is guaranteed valid down to V CC =0.7V at 25C. The STM1061has an open drain active-low output which will sink current when output is asserted. Connect a pull-up resistor from OUT to any supply voltage up to 6V (see Figure 6 on page 6). Select a resistor value large enough to register a logic low, and small enough to register a logic high while all of the input current and leakage paths connected to the reset output line are being supplied. A 10k pull-up is sufficient in most applications. The advantages of open drain output is the ability to connect more open drain outputs in parallel (wired OR connections) as well as connect the output to a power supply voltage different from VCC.
3.2
Negative-Going VCC Transients and Undershoot
The STM1061 device is relatively immune to negative-going V CC transients (glitches). The graph (see Figure 11 on page 11) indicates the maximum pulse width a negative VCC transient can have without causing a reset pulse. As the magnitude of the transient increases (further below the threshold), the maximum allowable pulse width decreases. Any combination of duration and overdrive which lies under the curve will NOT generate a reset signal. A 0.1F bypass capacitor mounted as close as possible to the VCC pin provides additional transient immunity.
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STM1061
Typical Operating Characteristics
4
Typical Operating Characteristics
Figure 7.
1400
Supply Current vs. Input Voltage
1200
1000
ICC (nA)
800
600 Temp = 40C Temp = 25C 200 Temp = 85C
400
0 0 1 2 3 4 5 6
AI11119b
VCC (V)
Figure 8.
1250
Supply Current vs. Ambient Temperature
Supply Current: ICC (nA)
1000
750
500
VCC = 5V VCC = 3V VCC = 2V
250
0 -40
-20
0
20
40
60
80
AI11120b
Ambient Temperature (C)
9/23
Typical Operating Characteristics Figure 9. Output Detect Delay Time vs. Ambient Temperature
STM1061
35.00
VCC-to-OUT Detect Delay: tPD (s)
30.00 VTH = 3.4V
25.00
20.00
15.00
10.00
VTH = 1.6V
5.00
0.00 40
20
0
20
40
60
80
AI11121b
Ambient Temperature: TA (C)
Figure 10. Output Release Delay Time vs. Ambient Temperature
50.00 45.00
VCC-to-OUT Release Delay: tPR (s)
40.00 VTH+ = 3.57V 35.00 30.00 25.00 20.00 15.00 VTH+ = 1.68V 10.00 5.00 0.00 40 20 0 20 40 60 80
AI11122b
Ambient Temperature: TA (C)
10/23
STM1061
Typical Operating Characteristics
Figure 11. Maximum Transient Duration vs. Reset Threshold Overdrive
160 140
Transient Duration (s)
120 100 80 60 40 20 0 1 10 100
VTH = 3.4V VTH = 1.6V
1000
10000
AI11123b
Threshold Overdrive (mV)
1. Reset occurs above the curve.
Figure 12. Detect, Release Voltage vs. Ambient Temperature for V TH = 3.4V
3.6
Detect, Release Voltage: VTH, VTH+ (V)
3.5
Detect Voltage, VTH Release Voltage, VTH+ 3.4
3.3 40
20
0
20
40
60
80
AI11124b
Ambient Temperature (C)
11/23
Typical Operating Characteristics Figure 13. N-channel Driver Output Current vs. V DS
STM1061
0.06 VCC = 3.3V VCC = 3.0V
0.05
Output Current: ID (A)
0.04
VCC = 2.7V VCC = 2.1V VCC = 1.5V
0.03
VCC = 1.0V
0.02
0.01
0 0 0.25 0.5 0.75 1 1.25 1.5
AI11125b
Output Voltage: VDS (V)
Figure 14. N-channel Driver Output Current vs. Input Voltage for V DS = 0.5V
30
25
Output Current: IOUT (mA)
Temp. (25C) 20 Temp. (85C) Temp. (40C) 15
10
5
0 0 0.5 1 1.5 2 2.5 3
AI11126b
Input Voltage: VCC (V)
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STM1061
Maximum Rating
5
Maximum Rating
Stressing the device above the rating listed in the Table 3: Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Table 3.
S y mb o l TSTG TSLD
(1 )
Absolute Maximum Ratings
Parameter Storage Temperature (V CC Off, VBAT Off) Lead Solder Temperature for 10 seconds Input or Output Voltage Supply Voltage Output Current Power Dissipation Value 55 to 150 260 0.3 to VCC +0.3 0.3 to 7.0 20 320 Unit C C V V mA mW
VIO VCC IO PD
1. Reflow at peak temperature of 260C (total thermal budget not to exceed 245C for greater than 30 seconds).
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DC and AC Parameters
STM1061
6
DC and AC Parameters
This section summarizes the operating measurement conditions, and the DC and AC characteristics of the device. The parameters in the DC and AC characteristics Tables that follow, are derived from tests performed under the Measurement Conditions summarized in Table 4: Operating and AC Measurement Conditions. Designers should check that the operating conditions in their circuit match the operating conditions when relying on the quoted parameters. Table 4.
Sym VCC TA Supply Voltage Ambient Operating Temperature Input Rise and Fall Times Input Pulse Voltages Input and Output Timing Ref. Voltages
Operating and AC Measurement Conditions
Parameter STM1061 0.7 to 6.0 40 to 85 05 0.2 to 0.8VCC 0.3 to 0.7VCC Unit V C ns V V
Figure 15. AC Testing Input/Output Waveforms
0.8VCC
0.7VCC 0.3VCC
AI02568
0.2VCC
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STM1061 Figure 16. Voltage Timing Waveform
VCC VTH+ VTH VCC (min) VSS
DC and AC Parameters
Release Voltage (VTH+ = VTH + VHYST) Detect Voltage
VOUT
tPD Detect Delay VSS
tPR Release Delay
AI10483
15/23
DC and AC Parameters Table 5.
S y m. VCC I CC
STM1061
DC and AC Characteristics
Description Operating Voltage VCC Supply Current VCC = 3.0V, No Load VCC = 5.5V, No Load VCC = 1.0V 1. 0 3. 0 5. 0 6. 0 7. 0 VCC = 2.0V VCC = 3.0V VCC = 4.0V VCC = 5.0V Test Condition (1) Mi n 0. 7 0.9 1.1 1.7 14 22 26 30 Typ Ma x 6.0 3.0 3.6 Unit V A A mA mA mA mA mA
IOUT
Output Current, N-channel (VDS = 0.5V), Reset asserted
Voltage Thresholds VTH Detect Voltage (2) (see Table 9 on page 21 for detailed listing) Release Voltage Threshold Hysteresis VCC falling from (V TH + 100mV) to (VTH 100mV) at 10mV/s VCC rising from (VTH+ 100mV) to (VTH+ + 100mV) at 10mV/s 0.02VTH VTH 2% VTH VTH + VHYST 0.05VTH 0.08VTH VTH + 2% V
VTH+ VHYST
V V
tPD
VCC to OUT Detect Delay
25
s
tPR
VCC to OUT Release Delay
30
200
s
Threshold Temperature Coefficient
1. V alid for Ambient Operating Temperature: TA = 25C.
100
ppm/oC
2. Other VTH - threshold are offered. Minimum order quantities may apply. Contact local sales office for availability.
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STM1061
Package Mechanical
7
Package Mechanical
In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 17. SOT23-3 3-lead Small Outline Transistor Package Outline
E E1
B 0.15
M
CAB
A1
1
e e1 D
0.20
M
CAB A
3X
0.10 C C
A2 A
3X b C
L1 C L
SOT23-3
1. Drawing is not to scale.
17/23
Package Mechanical Table 6.
S y mb o l Typ A A1 A2 b C D E E1 e e1 L L1 Q N 0.54 0.40 0 3 0.60 8 Mi n 0.89 0.01 0.88 0.30 0.08 2.80 2.10 1.20 0.89 1.78 Ma x 1.12 0.10 1.02 0.50 0.20 3.04 2.64 1.40 1.03 2.05 0.021 0.016 0 3 Typ Min 0.035 0.001 0.035 0.012 0.003 0.110 0.083 0.047 0.035 0.070
STM1061 SOT23-3 3-lead Small Outline Transistor Package Mechanical Data
mm inches M ax 0.044 0.004 0.042 0.020 0.008 0.120 0.104 0.055 0.041 0.081
0.024 8
18/23
STM1061
Package Mechanical Figure 18. SOT323-3 (SC70-3) 3-lead Small Outline Transistor Package Outline
E E1
B 0.30
M
CAB
A1
1
e e1 D
0.10
M
CAB A
3X
0.10 C C
A2 A
3X b 1 C
L1 C L
SOT323-3
1. Drawing is not to scale.
Table 7.
SOT323-3 (SC70-3) 3-lead Small Outline Transistor Package Mechanical Data
mm inches Ma x 1.10 0.10 1.00 0.40 0.18 2.20 2.40 1.35 Typ Mi n 0.031 0.000 0.031 0.010 0.004 0.071 0.071 0.045 0.026 0.051 0.45 0.30 30 12 0.014 0.004 0 8 3 0.018 0.012 30 12 M ax 0.043 0.004 0.039 0.016 0.007 0.087 0.094 0.053
Symbol Typ A A1 A2 b C D E E1 e e1 L L1 Q 1 N Min 0.80 0.00 0.80 0.25 0.10 1.80 1.80 1.15 0.65 1.30 0.35 0.10 0 8 3
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Part Numbering
STM1061
8
Part Numbering
Table 8.
Example:
Ordering Information Scheme
S T M1 0 6 1 N xx WX 6 F
Device Type STM 1061
Output Type N = Open Drain (Active-Low) Threshold Voltage (1) xx = See Table 9 on page 21
Package WX = SOT23-3 W = SOT323-3 (SC70-3) (1)
Temperature Range 6 = 40 to 85C
Shipping Method F = ECOPACK Package, Tape & Reel
1. Other thresholds voltage options are offered. Minimum order quantities may apply. Contact local sales office for availability.
For other options, or for more information on any aspect of this device, please contact the ST Sales Office nearest you.
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STM1061 Table 9.
Suffix Min (2%) 16 17 19 21 22 23 25 26 27 28 29 30 31 34 38 1.568 1.666 1.862 2.058 2.156 2.254 2.450 2.548 2.646 2.744 2.842 2.940 3.038 3.332 3.724 Typ 1.600 1.700 1.900 2.100 2.200 2.300 2.500 2.600 2.700 2.800 2.900 3.000 3.100 3.400 3.800 Max (+2%) 1.632 1.734 1.938 2.142 2.244 2.346 2.550 2.652 2.754 2.856 2.958 3.060 3.162 3.468 3.876
Part Numbering Factory-Trim med Thresholds with Marking Description
Threshold Voltage VTH (V) at TA = 25C (1) Topside Marking 16Nx 17Nx 19Nx 21Nx 22Nx 23Nx 25Nx 26Nx 27Nx 28Nx 29Nx 30Nx 31Nx 34Nx 38Nx
1. Other VT H- thresholds are offered. Minimum order quantities may apply. Contact local sales office for availability.
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Revision History
STM1061
9
Revision History
Table 10.
Date 20-January2004 01-Aug-05
Document Revision History
Version 1.0 First Edition Update Operation section, characteristics; insert new graphics; add ECOPACK information ( Figure 7, 8, 9, 10, 11, 12, 13, and 14; Table Table 5, 8, and 9 ) Update characteristics, remove `push-pull output' reference (Figure 8, 9, 10, 11, 12, and 16; Table Table 2, , 5, and 8) Status upgrade; update characteristics; add Marking information (Figure 7 , 8, 9, 10, 11, 12, 13, and 14; Table Table 8, and 9) Update characteristics (Table 3, and 4) Update Chapter : Features, Figure 1, 5, 6, Table 8 and 9. Description
1.1
02-Sep-05 19-O ct-05 18-N ov-05 27-Jul-2006
1.2 2.0 3.0 4
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STM1061
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