ST619LB
Product Page
The ST619LB is a step-up charge pump DC-DC converter which delivers
a regulated 5V ±4% output at 30mA and over temperature.The
input voltage range is 2V to 3.6V (two battery cells). It requires
only four external capacitors: two 0.22µF flying capacitors,
and two 10µF capacitors at the input and output. The low operating
supply current (typ 200µA) makes this device ideal for small,
portable, and battery powered applications. When shut down the load
is disconnected from the input and the supply current is typically
0.02µA. The ST619LB is available in the SO-8 and DIP-8 packages.
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Regulated 5V ±4% charge pump |
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Output current guaranteed overtemperature: 20mA
(Vin>= 2V), 30mA (Vin>= 3V) |
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No inductors, very low emi noise |
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Uses small, inexpensive capacitors |
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Logic controlled 1mA max shut-down supply current |
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Shut-down disconnects load from input |
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SO-8 and DIP-8 packages |
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Battery powered portable equipment |
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Mobile equipment |
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SIM card supplier |
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Flash Memory Programmer |
Typical application circuit of ST619LB
| Pin No. |
Symbol |
Name and Function |
| 1 |
C1+ |
Positive terminal for the first charge pump capacitor |
| 2 |
Vin |
Input Supply Voltage |
| 3 |
Vout |
+5V Output Voltage. Vout = 0 when in Shut Down mode |
| 4 |
C2+ |
Positive terminal for the second charge pump capacitor |
| 5 |
C2- |
Negative terminal for the second charge pump capacitor |
| 6 |
GND |
Ground |
| 7 |
SHDN |
Active high C-MOS - Logic Level Shutdown Input. SHDN is
not internally pulled to Vcc. Connect to GND for normal operation |
| 8 |
C1- |
Negative terminal for the first charge pump capacitor |
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