NCP145 datasheet(4/10 Pages) ONSEMI

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NCP145

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ELECTRICAL CHARACTERISTICS −40°C ≤ TJ ≤ 85°C; VBIAS = 2.7 V or (VOUT + 1.6 V), whichever is greater, VIN = VOUT(NOM) +

0.3 V, IOUT = 1 mA, VEN = 1 V, unless otherwise noted. CIN = 1 mF, COUT = 2.2 mF. Typical values are at TJ = +25°C. Min/Max values are

for −40°C ≤ TJ ≤ 85°C unless otherwise noted. (Note 4)

Parameter

Test Conditions

Symbol

Min

Typ

Max

Unit

Operating Input Voltage

Range

VIN

VOUT +

VDO

5.5

Operating Bias Voltage

Range

VBIAS

(VOUT +

1.40) ≥ 2.4

5.5

Undervoltage Lock−out

VBIAS Rising

Hysteresis

UVLO

1.6

0.2

Output Voltage Accuracy

VOUT

±0.5

Output Voltage Accuracy

−40°C ≤ TJ ≤ 85°C, VOUT(NOM) + 0.3 V ≤ VIN ≤

VOUT(NOM) + 1.0 V, 2.7 V or (VOUT(NOM) +

1.6 V), whichever is greater < VBIAS < 5.5 V,

1 mA < IOUT < 500 mA

VOUT

−1.5

+1.5

VIN Line Regulation

VOUT(NOM) + 0.3 V ≤ VIN ≤ 5.0 V

LineReg

0.01

%/V

VBIAS Line Regulation

2.7 V or (VOUT(NOM) + 1.6 V), whichever is

greater < VBIAS < 5.5 V

LineReg

0.01

%/V

Load Regulation

IOUT = 1 mA to 500 mA

LoadReg

1.5

VIN Dropout Voltage

IOUT = 150 mA (Note 5)

VDO

IOUT = 500 mA (Note 5)

VDO

140

250

VBIAS Dropout Voltage

IOUT = 500 mA, VIN = VBIAS (Note 5)

VDO

1.1

1.5

Output Current Limit

VOUT = 90% VOUT(NOM)

ICL

550

800

1000

Bias Pin Operating Current VBIAS = 2.7 V

IBIAS

110

Bias Pin Disable Current

VEN ≤ 0.4 V

IBIAS(DIS)

0.5

Vinput Pin Disable Current

VEN ≤ 0.4 V

IVIN(DIS)

0.5

EN Pin Threshold Voltage

EN Input Voltage “H”

VEN(H)

0.9

EN Input Voltage “L”

VEN(L)

0.4

EN Pull Down Current

VEN = 5.5 V

IEN

0.3

Turn−On Time

From assertion of VEN to VOUT =

98% VOUT(NOM). VOUT(NOM) = 1.2 V

tON

215

Turn−On Slew Rate

VEN 0 V to 1.0 V, VOUT(NOM) = 1.2 V,

VOUT from 10 mV to 610 mV

mV/ms

Power Supply Rejection

Ratio

VIN to VOUT, f = 1 kHz, IOUT = 150 mA,

VIN ≥ VOUT +0.5 V

PSRR(VIN)

VBIAS to VOUT, f = 1 kHz, IOUT = 150 mA,

VIN ≥ VOUT +0.5 V

PSRR(VBIAS)

Output Noise Voltage

VIN = VOUT +0.5 V, VOUT(NOM) = 1.0 V,

f = 10 Hz to 100 kHz

mVRMS

Thermal Shutdown

Threshold

Temperature increasing

160

°C

Temperature decreasing

140

Output Discharge

Pull−Down

VEN ≤ 0.4 V, VOUT = 0.5 V, NCP145A options

only

RDISCH

150

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.

4. Performance guaranteed over the indicated operating temperature range by design and/or characterization. Production tested at TA = 25°C.

Low duty cycle pulse techniques are used during the testing to maintain the junction temperature as close to ambient as possible.

5. Dropout voltage is characterized when VOUT falls 3% below VOUT(NOM).

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