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IR3895MTRPBF

- 1 -P 16A Highly Integrated SupIRBuck Single‐Input Voltage, Synchronous Buck Regulator

International Rectifier 

16A Highly Integrated SupIRBuck

Single‐Input V-o7lt-aPge, Synchronous Buck Regulator

PD‐97746

IR3895

PARAMETER

Zero‐crossing Comparator Delay

Zero‐crossing Comparator Offset

Oscillator

Rt Voltage

Frequency Range

Ramp Amplitude

Ramp Offset

Min Pulse Width

Max Duty Cycle

Fixed Off Time

Sync Frequency Range

Sync Pulse Duration

Sync Level Threshold

Error Amplifier

Input Offset Voltage

Input Bias Current

Input Bias Current

Sink Current

Source Current

Slew Rate

Gain‐Bandwidth Product

DC Gain

Maximum output Voltage

Minimum output Voltage

Common Mode input Voltage

Reference Voltage

Feedback Voltage

SYMBOL

Tdly_zc

Vos_zc

CONDITIONS

Note 4

Note 4

Vrt

Fs

Vramp

Ramp(os)

Tmin(ctrl)

Dmax

Toff

Fsync

Tsync

High

Low

Rt = 80.6K

Rt = 39.2K

Rt = 15.0K

Vin = 6.8V, Vin slew rate max = 1V/µs,

Note 4

Vin = 12V, Vin slew rate max = 1V/µs,

Note 4

Vin = 21V, Vin slew rate max = 1V/µs,

Note 4

Vcc=Vin=5V,For external Vcc operation,

Note 4

Note 4

Note 4

Fs = 300kHz, PVin = Vin = 12V

Note 4

Vos_Vref

Vos_Vp

IFb(E/A)

IVp(E/A)

Isink(E/A)

Isource(E/A)

SR

GBWP

Gain

Vmax(E/A)

Vmin(E/A)

VFb – Vref, Vref = 0.5V

VFb – Vp, Vp = 0.5V,Vref=0

Note 4

Note 4

Note 4

Vfb

Vref and Vp pin floating

MIN TYP

256/Fs

‐4

0

270

540

1350

1.0

300

600

1500

1.02

1.80

3.15

0.75

0.16

86

200

270

100 200

3

‐1.5

‐1.5

‐1

0

0.4 0.85

4

7.5

7

12

20

30

100 110

1.7 2.0

0

0.5

MAX

4

330

660

1650

60

250

1650

0.6

+1.5

+1.5

+1

+4

1.2

11

20

40

120

2.3

100

1.2

UNIT

s

mV

V

kHz

Vp‐p

V

ns

%

ns

kHz

ns

V

%

µA

mA

mA

V/µs

MHz

dB

V

mV

V

V

7 JANUARY 18, 2013 | DATA SHEET| Rev 3.4

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