IDTP9122 Datasheet, PDF (1/16 Pages) Integrated Device Technology – Dual Channel Synchronous Step- Down Switcher with Integrated FET

Dual Channel Synchronous Step-
Down Switcher with Integrated FET
Advanced Datasheet
Features
 Input Voltage Range: 2.7V to 5.5V
 Two step-down converters with integrated FETs
 Buck1: 2A
 Buck2: 3A
 Buck 2 to operate in Buck or Switch mode
 Factory Programmable Output Voltage: 0.8 - 3.4V
 Automatic PFM/PWM or forced PWM mode
 Switching frequency 2MHz
 Optional Programmable Sequence Mode
 Power Good and/or Power On Reset Output
 -40°C to +85°C operating temperature range
 Package: QFN 24-ld 4 x 4mm x 0.8mm
Applications
Point of Load Regulation in a variety of low power
applications:
 Solid State Disk Drive (SSD) Power Management
 Low Power USB powered applications
 Set Top Box / TV Power Supply
 Portable Gaming
IDTP9122
Description
IDTP9122 is a fully integrated power management IC
designed to provide 2 factory programmable voltage rails
from a single 5V or 3.3V input rail with high efficiency and
low quiescent currents in sleep mode or no-load condition.
The device offers selectable direct buck enable inputs or a
factory programmable sequencing with power good and
power on reset generation.
To support low power standby operation, the IDTP9122
supports a configurable sleep mode.
The IDTP9122 is available in a 4mm x 4mm, 24-ld, QFN
package and guaranteed to operate over the ambient
temperature range -40°C to +85°C.
Simplified Application Diagram
INPUT VOLTAGE
VIN
FB1
PVIN1
LX1
PVIN2
VREF(optional)
VGND
VINSEL
PGND1
DEVSLPIN
GPI3
GPIO14
GPIO15
GPO16
GPIO17
FB2
LX2
PGND2
VOUT1
INPUT VOLTAGE
VIN
PVIN1
PVIN2
VOUT2
VINSEL
VREF(optional)
VGND
DEVSLPIN
GPI3
GPIO14
GPIO15
GPO16
GPIO17
FB1
LX1
PGND1
FB2
LX2
PGND2
VOUT1
VOUT2
IDTP9122 with VINSEL (pin 4) in Buck Configuration for VOUT2
IDTP9122 with VINSEL (pin 4) in Switch Configuration for VOUT2
March 12, 2014
1
© 2014 Integrated Device Technology, Inc.