DIA7976

Version 1.9, Apr 2025

www.dioo.com

© 2025 Dioo Microcircuits Co., Ltd. Jiangsu

5

6. Electrical Characteristics

At operating temperature range (TA = -40°C to 125°C), VIN = VOUT(NOM) + VDO or 1.7 V (whichever is greater), IOUT

= 1 mA, VEN = VIN, and CIN = COUT = 1 μF, unless otherwise noted; all typical values are at TA = 25°C.

Symbol

Parameter

Test Conditions

Min

Typ

Max

Unit

VFB

Feedback voltage

Adjustable only

0.539

0.55

0.561

V

VOUT

Output accuracy(1)

TA = 25°C

-1

1

%

-40°C ≤ TA ≤ 85°C

-1.5

1.5

%

-40°C ≤ TA ≤ 125°C

-2.0

2.0

%

LineReg

Line regulation

VOUT(NOM) + VDO ≤ VIN(2) ≤ 6.0 V

0.1

0.3

%/V

LoadReg

Load regulation

0.1 mA ≤ IOUT ≤ 500 mA, VIN ≥ 2.0 V

0.04

V/A

IQ

Quiescent current

IOUT = 0 mA

TA = 25°C

27

45

µA

-40°C ≤ TA ≤ 125°C

27

50

ISHDN

Shutdown current

VEN ≤ 0.3 V, 1.7 V ≤ VIN ≤ 6.0 V,

-40°C ≤ TA ≤ 125°C

0.1

1

µA

IFB

Feedback pin current

Adjustable only

0.01

0.1

µA

ICL

Output current limit

VOUT(NOM) < 1.0 V,

VOUT = VOUT(NOM) - 0.2 V, VIN = 2.0 V

515

720

1000

mA

VOUT(NOM) ≥ 1.0 V, VOUT = VOUT(NOM) × 0.85,

VIN = VOUT(NOM) + 1.0 V

ISC

Short-circuit current

limit

VOUT = 0 V

VOUT(NOM) < 1.0 V,

VIN = 2.0 V

200

300

400

mA

VOUT(NOM) ≥ 1.0 V,

VIN = VOUT(NOM) + 1.0 V

VDO

Dropout voltage

IOUT = 500 mA,

VOUT = 0.95 ×

VOUT(NOM)

VOUT = 1 V

830

mV

VOUT = 1.2 V

650

VOUT = 1.5 V

400

VOUT = 1.8 V

270

VOUT = 2.5 V

185

VOUT = 3.3 V

150

200

VOUT = 3.6 V

118

VOUT = 5.5 V

115

PSRR

Power-supply

rejection ratio

VOUT = 0.55 V,

VIN = 2.0 V,

IOUT = 10 mA,

COUT = 2.2 µF

f = 1 kHz

64

dB

f = 100 kHz

50

f = 1 MHz

75