G8089
Low-Supply-Current Synchronous Step-up DC-DC Converter
General Description
Features:
The G8089 is a compact, PFM mode, and
step-up DC-DC converter with low quiescent
current. The inter-nal synchronous rectifier
reducescostandPCBspace.byeliminatingthe
need for an external Schottky diode. Low
on-resistance of the internal switches
improves theefficiency up to 95%. The
start-up voltage is guaranteed. below 1V.
After start-up, the device can operate with
input voltage down to 0.9V. The G8089 is
suitable for por-table battery-powered
applications. Consuming only 15mA quiescent
current and an optimized control scheme
al-lows the device to operate at very high
efficiency over the entire load current
range.
0.9V Typical Start-up Input Voltage
15mA Typical No Load Quiescent Current
PFM Operation
High Efficiency up to 95%
Fixed 1.8V, 2.1V, 2.8V, 3V, 3.3V, 3.8V, 4.5V or
5.5V
Output Voltage
800mA
Internal
Switch
CurrentInternal
Synchronous Rectifier
SOT-89 Package
Lead Free and Green Devices Available.
Pin Configuration
Simplified Application Circuit
GM Micro Devices
1
GTM [ GTM CORPORATION ]
