ST619LB_07 Datasheet, PDF (1/16 Pages) STMicroelectronics – DC-DC converter regulated 5 V charge pump

ST619LB
DC-DC converter regulated 5 V charge pump
Features
■ Regulated 5 V ±4 % charge pump
■ Output current guaranteed over temperature:
20 mA (V_I ≥ 2 V), 30 mA (V_I ≥ 3 V)
■ No inductors; very low EMI noise
■ Uses small, inexpensive capacitors
■ Logic controlled 1 µA max shut-down supply
current
■ Shut down disconnects load from input
■ Available in SO-8 and DIP-8 packages
Description
The ST619LB is a step-up charge pump DC-DC
converter which delivers a regulated 5 V ±4 %
output at 30 mA and over temperature. The input
voltage range is 2 V to 3.6 V (two battery cells).
It requires only four external capacitor: two
0.22 µF flying capacitors, and 10 µF capacitors at
the input and output.
Low operating supply current (typ. 200 µA) make
the 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 0.02 µA. The ST619LB is
available in SO-8 package.
SO-8
Table 1.
Device summary
Order codes
ST619LB
November 2007
Rev. 4
SO-8 (tape & reel)
ST619LBDR
1/16
www.st.com
16