IP1837TRPBF datasheet(9/40 Pages) IRF

Part #	IP1837TRPBF

Description	Highly Integrated 35A Single?릋nput Voltage, Synchronous Buck Regulator

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Manufacturer	IRF [International Rectifier]

Direct Link	http://www.irf.com

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9 / 40 page

iP1837

Highly Integrated 35A Single‐input Voltage,

Synchronous Buck Regulator

March 5, 2012 | V1.26

9

97600

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

Shutdown Output

Threshold

SD

0.1

V

Bootstrap Diode

Forward Voltage

I(Boot) = 30mA, Note 3

360

520

960

mV

Switch Node

SW Leakage Current

lsw

SW = 0V, Enable = 0V

3

µA

Charge Pump (PVCC)

Output Voltage

PVCC

VCC = 3.3V, Fs = 1500 kHz,

Cload = 2.2uF

5.5

6

6.5

V

Oscillator Frequency

Fs_CP

Fs

kHz

Body Braking

BB Threshold

BB_threshold

Fb > Vref, Sw duty cycle

0

%

Power Good

Power Good Lower

Threshold

VPG (lower)

Voso rising

0.48

0.51

0.54

V

Lower Threshold Delay

VPG (lower)_Dly

Voso rising

256/Fs

s

PGood Voltage Low

PG (voltage) IPGood = ‐5mA

0.5

V

Leakage Current

ILEAKAGE

0

1

µA

Over Voltage Protection (OVP)

OVP Trip Threshold

OVP (trip)

Voso rising

0.67

0.7

0.73

V

OVP Fault Prop Delay

OVP (delay)

Voso rising, Note 3

200

ns

Over‐Current Protection

OC Trip Current

ITRIP

OC set pin left floating,

PVCC = 6.5V, TJ = 85°C

44

49

54

A

SS Off Time

SS_Hiccup

Note 3

4096/

Fs

s

Thermal Shutdown

Note 3

145

°C

Hysteresis

Note 3

20

°C

Notes

3. Guaranteed by design but not tested in production.

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