IR3876M_15 Datasheet, PDF (4/21 Pages) International Rectifier – 12A HIGHLY INTEGRATED WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR

IR3876MPBF
Pin Description
NAME
NC
ISET
PGOOD
GND
FB
SS
NC
3VCBP
NC
VCC
PGND
PHASE
VIN
BOOT
FF
EN
NUMBER
1
2
3
4,17
5
6
7
8
9
10
11
12
13
14
15
16
I/O
LEVEL
-----
5V
Reference
3.3V
3.3V
-----
3.3V
-----
5V
Reference
VIN
VIN
VIN +VCC
VIN
5V
DESCRIPTION
No connection
Connecting resistor to PHASE pin sets over current trip point
Power good – pull up to 3.3V
Bias return and signal reference
Inverting input to PWM comparator, OVP / PGood sense
Set soft start slew-rate with a capacitor to GND
No connection
LDO output. A minimum of 1.0 µF ceramic capacitor is required
No connection
Gate drive supply
Power return
Phase node (or switching node) of MOSFET half bridge
Input voltage for the system.
Bootstrapped gate drive supply – connect a capacitor to PHASE
Input voltage feed forward – sets on-time with a resistor to VIN
Enable
4