IP1827 datasheet(7/39 Pages) IRF

7 / 39 page

iP1827

Highly Integrated 25A Single‐input Voltage,

Synchronous Buck Regulator

March 5, 2012 | V1.4

97599

ELECTRICAL SPECIFICATIONS

RECOMMENDED OPERATING CONDITIONS

SYMBOL

DEFINITION

MIN

MAX

UNITS

VIN

Input Voltage

1.5

PVCC

Supply Voltage

4.5

7.5

VCC

Supply Voltage

3.13

3.46

Boot to SW

Supply Voltage

4.5

7.5

Output Voltage

0.6

0.75 Vin

Output Current

Switching Frequency

225

1650

kHz

Junction Temperature ‐40

125

°C

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, these specification apply over, 1.5V < Vin < 16V, 3.13V < Vcc < 3.46V. 0

oC < T

J < 125

oC.

Typical values are specified at TA = 25

oC.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

Power Loss

PLOSS

Vin = 12V, VCC = 3.3V, VO = 1.8V,

IO = 25A, Fs = 600kHz, L=0.3uH, TA =

25°C

4.2

MOSFET Rds(on)

Top Switch

Rds(on)_Top VBoot – VSW = 5V, ID = 5A, Tj = 25°C

4.8

PVCC = 5V, ID = 25A, Tj = 25°C

2.3

2.7

Bottom Switch

VCC = 3.3V, ID = 25A, Tj = 25°C

1.8

2.2

mΩ

Reference Voltage

Feedback Voltage

VFB

0.6

40°C < Tj < 105°C ‐0.5

+0.5

Accuracy

‐40°C < Tj < 125°C, Note 3 ‐1.5

+1.5

Supply Current

VCC Supply Current

(Standby)

ICC(Standby)

Enable low, No Switching, VCC = 3.3V

400

600

VCC Supply Current (Dyn)

ICC(Dyn)

Enable high, Fs = 500kHz, VCC = 3.3V

PVCC Supply Current

(Standby)

IPCC(Standby)

Enable low, No Switching, PVCC = 5V

150

200

PVCC Supply Current (Dyn)

IPCC(Dyn)

Enable high, Fs = 500kHz, PVCC = 5V

Under Voltage Lockout

PVCC – Start – Threshold

PVCC_UVLO_Start

PVCC Rising Trip Level

4.0

4.2

4.4

PVCC – Stop – Threshold

PVCC_UVLO_Stop

PVCC Falling Trip Level

3.7

3.9

4.1

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