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TSZ02201-0Q3Q0NZ00360-1-2

© 2014 ROHM Co., Ltd. All rights reserved.

17. Feb.2015 Rev.002

www.rohm.com

TSZ22111・15・001

BD8312HFN

Absolute Maximum Ratings

Parameter

Symbol

Rating

Unit

Maximum Applied Power Voltage

15

V

Maximum Input Current

1.0

A

Power Dissipation

Pd

0.63

(Note 1)

W

Operating Temperature Range

Topr

-25 to +85

°C

Storage Temperature Range

Tstg

-55 to +150

°C

Junction Temperature

Tjmax

+150

°C

(Note 1) When used at Ta = 25°C or more and installed on a 70x70x1.6

Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit

between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over

the absolute maximum ratings.

Recommended Operating Conditions (Ta = 25°C)

Parameter

Symbol

Rating

Unit

Power Supply Voltage

3.5 to 14

V

Output Voltage

1.2 to 12

V

Parameter

Symbol

Limit

Unit

Conditions

Min

Typ

Max

[Low Voltage Input Malfunction Preventing Circuit]

Detection Threshold Voltage

-

2.9

3.2

V

VREG monitor

Hysteresis Range

100

200

300

mV

[Oscillator]

Oscillation Frequency

1.38

1.5

1.62

MHz

[Regulator]

Output Voltage

4.65

5.0

5.35

V

[Error AMP]

INV Threshold Voltage

0.99

1.00

1.01

V

Input Bias Current

-50

0

+50

nA

Soft-Start Time

3.2

5.3

7.4

msec

[PWM Comparator]

LX Max Duty

-

-

100

(Note 1)

%

[Output]

PMOS ON-Resistance

-

450

600

m

Ω

NMOS ON-Resistance

-

300

420

m

Ω

Leak Current

-1

0

+1

µA

[STB]

STB Pin

Control Voltage

Operation

2.5

-

11

V

No-Operation

-0.3

-

+0.3

V

STB Pin Pull-Down Resistance

250

400

700

k

Ω

[Circuit Current]

Standby Current

VCC Pin

-

-

1

µA

-

-

1

µA

Circuit Current at Operation VCC

-

600

900

µA

Circuit Current at Operation PVCC

-

30

50

µA

(Note 1) 100% is MAX Duty as behavior of a PWM comparator. wherein High side PMOS is 100% at ON state because the same or less input voltage than

output voltage is supplied. This causes the SCP to activate and stop the operation of the DC/DC converter .