IR3710MTRPBF Datasheet, PDF (1/20 Pages) International Rectifier – WIDE INPUT AND OUTPUT, SYNCHRONOUS BUCK REGULATOR

Data Sheet No. PD60367
IR3710MTRPBF
WIDE INPUT AND OUTPUT, SYNCHRONOUS BUCK REGULATOR
FEATURES
Input Voltage Range: 3V to 28V
Output Voltage Range: 0.5V to 12V
Constant On-Time control
Excellent Efficiency at very low output current levels
Gate drive charge pump option to maximize
efficiency at higher output current levels
Compensation Loop not Required
Programmable switching frequency, soft start, and
over current protection
Power Good Output
Precision Voltage Reference (0.5V, +/-1%)
Enable Input with Voltage Monitoring Capability
Pre-bias Start Up
Under/Over Voltage Fault Protection
16pin 3x3 MLPQ lead free package
RoHS compliant
DESCRIPTION
The IR3710 is a single-phase sync-buck PWM
controller optimized for efficiency in high performance
portable electronics. The switching modulator uses
constant on-time control. Constant on-time with diode
emulation provides the highest light-load efficiency
required for all.
Programmable switching frequency, soft start, and over
current protection allows for a very flexible solution
suitable for many different applications. The
combination of the gate drive charge pump option and
constant on time control allow efficiency optimization in
the whole output current range, making this device an
ideal choice for battery powered applications.
Additional features include pre-bias startup, very
precise 0.5V reference, over/under voltage shut down,
power good output, and enable input with voltage
monitoring capability.
APPLICATION CIRCUIT
Enhanced Gate Drive Application Circuit:
V5
V3.3
D1
6.2k 10k
RISET
D2
DBOOT
C1
CPO
PVCC
FF
BOOT
VCC
UGATE
EN IR3710
PHASE
FCCM
PGOOD
ISET
LGATE
PGND
SS
GND
FB
CSS
VIN
RFF
L
CBOOT
R1
R2
VOUT
COUT
ORDERING INFORMATION
Package Description
Pin Count
IR3710MTRPbF
16
Page 1 of 20
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Parts Per Reel
4000
1/23/09