BD90640HFP-C datasheet(6/44 Pages) ROHM

Part #	BD90640HFP-C

Description	1ch Step-Down Switching Regulator

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Manufacturer	ROHM [Rohm]

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BD906xx-C series

TSZ02201-0T1T0AL00130-1-2

www.rohm.com

TSZ22111・15・001

15.Sep.2015 Rev.005

Electrical Characteristics (Unless otherwise specified, Ta = - 40 °C to +125 °C, VIN = 13.2 V, VEN / SYNC = 5 V)

Parameter

Symbol

Limit

Unit

Conditions

Min

Typ

Max

Whole chip

Shutdown Circuit Current

ISDN

-

0

5

μA

VEN / SYNC = 0 V,

Ta < 105 °C

Circuit Current

IIN

-

2.2

3.3

mA

Io = 0 A, VFB = 2 V

SW Block

POWER MOSFET ON Resistance

RON

-

0.16

0.32

Ω

ISW = 30 mA

Operating Output

Switch Current Of

Overcurrent

Protection

(Note 1)

BD90640HFP / EFJ-C

ISWLIMIT40

4.0

6.4

-

A

BD90620HFP / EFJ-C

ISWLIMIT20

2.5

4.3

-

A

BD90610EFJ-C

ISWLIMIT10

1.25

2.20

-

A

Output Leak Current

IOLK

-

0

5

μA

VIN = 36 V,

VEN / SYNC = 0 V,

Ta < 105 °C

Error Amp Block

Reference Voltage 1

VREF1

0.792

0.800

0.808

V

VVC = VFB, Ta = 25 °C

Reference Voltage 2

VREF2

0.784

0.800

0.816

V

VVC = VFB

Reference Voltage Input

Regulation

ΔVREF

-

0.5

-

%

3.5

V ≤ VIN ≤ 36 V

Input Bias Current

IB

-1.0

-

+1.0

μA

VC Sink Current

IVCSINK

-76.5

-54.0

-31.5

μA

VVC = 1.25 V,

VFB = 1.3 V

VC Source Current

IVCSOURCE

31.5

54.0

76.5

μA

VVC = 1.25 V,

VFB = 0.3 V

Trans Conductance

GEA

135

270

540

μA / V

IVC = ±10 μA,

VVC = 1.25 V

Soft Start Time

TSS

1.13

1.38

1.63

ms

RRT = 27 kΩ

Current Sense Part

Trans Conductance

GCS

-

5.2

-

A / V

OSC Block

Switching Frequency

fSW

450

500

550

kHz

RRT = 27 kΩ

Frequency Input Regulation

ΔfSW

-

1

-

%

3.5

V ≤ VIN ≤ 36 V

Enable / Sync Input Block

Threshold Voltage

VEN / SYNC

0.8

1.9

2.6

V

SYNC Current

IEN / SYNC

-

23

50

μA

VEN / SYNC = 5 V

UVLO

UVLO ON Mode Voltage

VUVLO_ON

-

3.24

3.50

V

UVLO OFF Mode Voltage

VUVLO_OFF

-

3.52

3.90

V

UVLO Hysteresis

VUVLO_HYS

-

280

-

mV

(Note 1) The Limit include output DC current and output ripple current.

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