IR3800MTRPBF International Rectifier, IR3800MTRPBF Datasheet - Page 4

• Manufacturer Part Number: IR3800MTRPBF
• Description: IC REG SYNC BUCK 12A 5X6 PQFN56
• Manufacturer: International Rectifier
• Series: SupIRBuck™r
• Type: Step-Down (Buck)r

Specifications of IR3800MTRPBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.6 ~ 12 V
• Current - Output: 12A
• Frequency - Switching: 600kHz
• Voltage - Input: 4.5 ~ 14 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 15-PowerVQFN
• Power - Output: 3.7W
• Part Status: Active
• Package: PQFN / 5 x 6
• Circuit: Single Output
• Iout (a): 12
• Switch Freq (khz): 600
• Input Range (v): 2.5 - 21
• Output Range (v): 0.6 - 12
• Digital Home Media: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: IR3800MTRPBFTR

11/04/08
Pins 4, 5 and 15 need to be connected together on system board.
Pin Description
Pin Name
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
SS/SD
OCSet
Comp
AGnd
AGnd
PGnd
AGnd
V
SW
NC
NC
HG
V
Fb
V
CC
IN
C
No Connect
Inverting input to the error amplifier. This pin is connected directly to the
output of the regulator via resistor divider to set the output voltage and
provide feedback to the error amplifier.
Output of error amplifier.
Signal ground for internal reference and control circuitry.
Signal ground for internal reference and control circuitry.
Soft start / shutdown. This pin provides user programmable soft-start
function. Connect an external capacitor from this pin to signal ground
(AGnd) to set the start up time of the output voltage. The converter can
be shutdown by pulling this pin below 0.3V.
Current limit set point. A resistor from this pin to SW pin will set the
current limit threshold.
This pin provides biasing voltage for the internal blocks of the IC. It also
powers the low side driver. A minimum of 0.1uF, high frequency
capacitor must be connected from this pin to power ground (PGnd).
No Connect
Power Ground. This pin serves as a separated ground for the MOSFET
drivers and should be connected to the system’s power ground plane.
Switch node. This pin is connected to the output inductor
Input voltage connection pin
This pin is connected to the high side Mosfet gate. Connect a small
capacitor from this pin to switch node (SW).
This pin powers the high side driver and must be connected to a voltage
higher than input voltage. A minimum of 0.1uF high frequency capacitor
must be connected from this pin to the power ground (PGnd).
Signal ground for internal reference and control circuitry.
Description
IR3800MPbF
PD-60352
4