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BD9DA00MF

Datasheet

TSZ02201-0J2J0AB01940-1-2

© 2025 ROHM Co., Ltd. All rights reserved.

18.Mar.2025 Rev.001

www.rohm.com

TSZ22111 • 15 • 001

Recommended Operating Conditions

Parameter

Symbol

Min

Typ

Max

Unit

Input Voltage

VIN

4

-

16

V

Input Voltage with External VCC Bias

2.7

-

14

V

External VCC Bias

VCC_EXT

3.13

-

3.60

V

Operating Junction Temperature

Tj

-40

-

+125

°C

Output Current(Note 1)

IOUT

0

-

12

A

Output Voltage Setting(Note 2)

VOUT

0.6

-

5.5

V

(Note 1) Tj must be 125 °C or less under the actual operating environment.

(Note 2) At low duty cycles, the frequency is lowered accordingly. Additionally, at high duty cycles, the output voltage may be limited by the VIN

voltage.

Please use the range of formulas listed in Selection of Components Externally Connected 3.Output Voltage Setting.

Electrical Characteristics (Unless otherwise specified Tj = -40 °C to +125 °C, VIN = 12 V, VEN = 2 V)

Parameter

Symbol

Min

Typ

Max

Unit

Conditions

Input Supply

Shutdown Current

ISDN

-

0

10

µA

VEN = 0 V

Operating Quiescent Current

IQ

-

600

1200

µA

IOUT = 0 A,

No switching

Enable

EN Threshold Voltage High

VENH

1.17

1.22

1.27

V

VEN rising

EN Threshold Voltage Low

VENL

-

1.02

-

V

VEN falling

EN Hysteresis Voltage

VENHYS

-

200

-

mV

EN Input Current

IEN

-

0

2

µA

VEN = 2 V

VIN UVLO

VIN UVLO Detection Threshold

Voltage

VINUVLO1

1.55

1.85

2.15

V

VIN falling

VIN UVLO Release Threshold

Voltage

VINUVLO2

2.1

2.4

2.7

V

VIN rising

VCC

VCC UVLO Detection Threshold

Voltage

VCCUVLO1

2.35

2.50

2.65

V

VCC falling

VCC UVLO Release Threshold

Voltage

VCCUVLO2

2.65

2.80

2.95

V

VCC rising

VCC Output Voltage

VCC

2.88

3.00

3.12

V

Reference Voltage, Error Amplifier, Soft Start

FB Reference Voltage

VREF

0.594

0.600

0.606

V

Forced CCM mode

FB Input Current

IFB

-

-

100

nA

VFB = 0.6 V

Error Amplifier Offset Voltage

VOFFSET

-3

0

+3

mV

Soft Start Time

tSS

0.75

1.00

1.25

ms

CSS1 + CSS2 = 0.044 µF

SS/REF Source Current

ISS_SO

-

36

-

µA

VSS/REF = 0.2 V

SS/REF Sink Current

ISS_SI

-

12

-

µA

VSS/REF = 1 V

Control

On-Time 1

tON1

133

167

200

ns

VOUT = 1.2 V, Forced CCM

mode, 600 kHz setting

On-Time 2

tON2

100

125

150

ns

VOUT = 1.2 V, Forced CCM

mode, 800 kHz setting

On-Time 3

tON3

80

100

120

ns

VOUT = 1.2 V, Forced CCM

mode, 1 MHz setting

Minimum On-Time(Note 3)

tMINON

-

45

-

ns

Minimum Off-Time

tMINOFF

-

150

-

ns

SW (MOSFET)

High-Side FET ON Resistance

RONH

-

16

-

mΩ

VBST - VSW = 3 V

Low-Side FET ON Resistance

RONL

-

4

-

mΩ

VCC = 3 V

Discharge FET ON Resistance

RON_DIS

-

70

150

Ω

VCC = 3 V

(Note 3) This is design value. No tested on outgoing inspection.