STOD1317B Datasheet, PDF (1/22 Pages) STMicroelectronics – Very high efficiency at light load thanks to pulse skipping operation

STOD1317B
170 mA 13 V, high efficiency
boost converter + LDO
Datasheet - production data
DFN12L (3 x 3 mm)
Features
 Operating input voltage range from 2.6 V to
4.8 V
 ±1% output voltage tolerance
 Low output ripple
 True-shutdown
 Short-circuit protection
 Digital low power function
 Very high efficiency at light load thanks to pulse
skipping operation
 Very fast line and load transients
 1.2 MHz switching frequency
 1 µA max. quiescent current
 DFN12L (3 x 3 x 0.8 mm)
Description
The STOD1317B is a fixed frequency, high
efficiency, boost DC-DC converter with cascaded
LDO able to provide output voltages ranging from
6 V to 13 V starting with an input voltage from
2.6 V to 4.8 V. The device is designed to supply
loads that are very sensitive to output ripple such
as AMOLED display panels. A dedicated LDO is
able to suppress any ripple and noise coming out
from the DC-DC converter. The LDO works with a
constant drop in order to maintain high efficiency
in the whole operating range. The low R_DSon N-
channel and P-channel MOSFET switches are
integrated and contribute to achieving high
efficiency. The true-shutdown feature allows
physical disconnection of the battery from the
load when the device is in shutdown mode. The
control technique is able to maintain efficiency
higher than 85% at light loads and higher than
80% at full load. The device includes soft-start
control, inrush current limiter, thermal shutdown
and inductor peak current limit. The STOD1317B
is packaged in DFN12L (3 x 3 x 0.8 mm) height.
Applications
 Single rail AMOLED display
 Cellular phones
 Battery powered equipment
Order code
STOD1317BTPUR
Table 1. Device summary
Marking
Package
1317B
DFN12L (3 x 3 mm)
Packaging
3000 parts per reel
April 2013
This is information on a product in full production.
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