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CS8251ETHA7

10V/5V Low Dropout Dual Regulator with Independent Output Enables

Cherry semiconductor 

Electrical

Characteristics:

-40°C

≤

TA

≤

+85°C,

11.0V ≤

unless

VCC ≤ 16.0V, ENABLE1

otherwise specified

=

ENABLE2

=

5.0V,

IOUT1

=

IOUT2

=

5.0mA,

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

s Primary Output (VOUT1)

Output Voltage

Line Regulation

Load Regulation

Sleep Mode Quiescent

Current

IOUT1 = 1.0A, 11.1V ≤ VCC ≤ 16V

9.5

11.1V ≤ VCC ≤ 26V

5mA ≤ IOUT1 ≤ 1.0A

VCC = 14V, ENABLE1=ENABLE2 = 0V

10.0

10.5

50

150

50

Quiescent Current

VCC = 14V, IOUT1 = 1.0A, IOUT2 = 250mA

208

Dropout Voltage

IOUT1 = 5.0mA

300

IOUT1 = 1.0A

900

Quiescent Bias Current

IOUT1 = 5mA, ENABLE2 = 0V,

10

VCC = 14V, IQ = ICC - IOUT1

IOUT1 = 1.0A, ENABLE2 = 0V,

200

VCC = 14V, IQ=ICC - IOUT1

Ripple Rejection

f = 120Hz, VCC = 14V with 1.0Vpp AC

54

Current Limit

11.1V ≤ VCC ≤ 26V

1.3

2.5

UNIT

V

mV

mV

µA

mA

mV

mV

mA

mA

db

A

s Secondary Output (VOUT2)

Output Voltage

IOUT2 = 250mA

VCC = 50V transient

4.75

5.0

5.25

V

6

V

Line Regulation

7V ≤ VCC ≤ 26V

40

mV

Load Regulation

5mA ≤ IOUT2 ≤ 250mA

100

mV

Dropout Voltage

IOUT2 = 5.0mA

1.2

V

IOUT2 = 250mA

1.8

V

Quiescent Bias Current

IOUT2 = 5mA, ENABLE1 = 0V,

VCC = 14V, IQ = ICC - IOUT2

5

mA

IOUT2 = 250mA, ENABLE1 = 0V,

VCC = 14V, IQ = ICC - IOUT2

8

mA

Ripple Rejection

f = 120Hz, VCC = 14V with 1.0 Vpp AC

54

db

Current Limit

7V ≤ VCC ≤ 26V

300

600

mA

s ENABLE Function (ENABLE)

Input Current

VCC = 14V, 0V ≤ ENABLE ≤ 5.5V

-150

Input Voltage

Low

0

High

2.0

150

µA

0.8

V

5.0

V

s Protection Circuitry

Overvoltage Shutdown

Thermal Shutdown

Thermal Hysteresis

24

32

V

180

°C

30

°C

2

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