IR3870MTR1PBF International Rectifier, IR3870MTR1PBF Datasheet - Page 4

• Manufacturer Part Number: IR3870MTR1PBF
• Description: IC BUCK SYNC ADJ 10A PQFN56
• Manufacturer: International Rectifier
• Series: SupIRBuck™r
• Type: Step-Down (Buck)r

Specifications of IR3870MTR1PBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.5 ~ 12 V
• Current - Output: 10A
• Frequency - Switching: 200kHz ~ 1MHz
• Voltage - Input: 3 ~ 26 V
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 17-PowerVQFN
• Part Status: Active
• Package: PQFN / 5 x 6
• Circuit: Single Output
• Iout (a): 10
• Switch Freq (khz): 0 - 1000
• Input Range (v): 3.0 - 26
• Output Range (v): 0.5 - 12
• Ocp Otp Uvlo Pre-bias Soft Start And: Constant On-Time + OVP no OTP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: IR3870MTR1PBFTR

Pin Description
NAME
NC
ISET
PGOOD
GND
FB
SS
NC
VCC
CPO
PVCC
PGND
PHASE
VIN
BOOT
FF
EN
NUMBER
4,17
10
11
12
13
14
15
16
1
2
3
5
6
7
8
9
I/O LEVEL
5V
Reference
3.3V
3.3V
3.3V
0.75V
5V
Reference
VIN
VIN
VIN
+PVCC
VIN
5V
DESCRIPTION
No connection
Connecting resistor to PHASE pin sets over current trip point
Power good – pull up to 5V
Bias return and signal reference
Inverting pin of PWM comparator and OVP/PGood sense
Set soft start slew-rate with a capacitor to GND
No connection
Internal bias supply
Charge pump output
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 – turns device on or off
IR3870MBF
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