IR3651SPBF International Rectifier, IR3651SPBF Datasheet - Page 3

• Manufacturer Part Number: IR3651SPBF
• Description: IC CTLR SYNC PWM BUCK 14-SOIC
• Manufacturer: International Rectifier

Specifications of IR3651SPBF

• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Frequency - Max: 460kHz
• Duty Cycle: 80%
• Voltage - Supply: 4.5 V ~ 13.2 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: 0°C ~ 125°C
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Frequency-max: 460kHz
• Package: 14-Pin SOIC (NB)
• Circuit: Sync PWM Controller
• Vcc (min): 4.5
• Vcc (max): 13.2
• Iout (a): 25
• Switch Freq (khz): programmable to 400kHz
• Pbf: PbF Option Available
• For Use With: IRDC3651 - KIT REF DESIGN SYNCH BUCK REG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

12/07/2010
SYNC
SS/SD
Comp
Gnd
1.25V
Vcc
Block Diagram
Rt
Fb
11
13
14
4
3
1
2
3uA
25K
25K
3V
20uA
POR
OCP
Rt
Oscillator
Ct
4.17V
64uA Max
Error Amp
0.3V
SS
S
R
Fig. 1: Simplified block diagram of the IR3651
Q
0.25V
Error Comp
Reset Dom
POR
Generator
Bias
POR
R
S
Vcc
Q
PBias
3V
1.25V
Vcc
VOLTAGE
VOLTAGE
LEVEL
SHIFT
LEVEL
SHIFT
LOW
LOW
VOLTAGE
CIRCUIT
LEVEL
SHIFT
HIGH
DETECT
UV
OCP
DETECT
DELAY
UV
IR3651SPBF
UV Q
S
R
10uA
12
10
7
6
5
8
9
DRVcc
LDrv
PGND
OCset
Vb
HDrv
Vs
3