DIA7976

Version 1.9, Apr 2025

www.dioo.com

© 2025 Dioo Microcircuits Co., Ltd. Jiangsu

6

VN

Output noise voltage

BW = 10 Hz to 100 kHz,

VOUT = 0.55 V, VIN = 2.0 V

40

µVRMS

VUVLO

Undervoltage lockout

VIN falling

1.17

1.27

1.48

V

VIN rising

1.21

1.32

1.55

VUVLO,

HYST

Undervoltage lockout

hysteresis

VIN hysteresis

50

mV

tSTR

Startup time

From EN low-to-high transition to

VOUT = VOUT(NOM) × 0.95

200

450

800

µs

VEN(HI)

EN pin high voltage

enabled

1

V

VEN(LO)

EN pin low voltage

disabled

0.3

V

IEN

Enable pin current

VIN = VEN = 6.0 V

10

nA

RPULLDOWN

Pulldown resistance

(only for DIA7976A)

VIN = 6.0 V

100

Ω

PGHTH

PG high threshold

VOUT increasing

89

92

96

%VOUT

PGLTH

PG low threshold

VOUT decreasing

86

90

93

%VOUT

PGHYST

PG hysteresis

2

%VOUT

VOL(PG)

PG pin low-level

output voltage

VIN ≥ 1.7 V, ISINK = 1.0 mA

400

mV

VIN ≥ 2.75 V, ISINK = 2.0 mA

VOH(PG)

PG pin high-level

output voltage(3)

VOUT ≥ 1.0 V, ISOURCE = 0.04 mA

0.8 x

VOUT

V

VOUT ≥ 1.4 V, ISOURCE = 0.2 mA

VOUT ≥ 2.5 V, ISOURCE = 0.5 mA

VOUT ≥ 4.5 V, ISOURCE = 1.0 mA

lkg(PG)

PG pin leakage

current(4)

VOUT > PGHTH, VPG = 6.0 V

7

50

nA

TSD

Thermal shutdown

Shutdown, temperature increasing

165

°C

Reset, temperature decreasing

150

tPGDH

PG delay time rising

time from 92% VOUT to 20% of PG(5)

165

µs

tPGDL

PG delay time falling

time from 90% VOUT to 80% of PG(5)

12

Note:

(1) When the device is connected to external feedback resistors at the FB pin, external resistor tolerances are not included.

(2) VIN = 1.7 V for VOUT(NOM) + VDO < 1.7 V.

(3) Push-pull version only. The push-pull option is supported only for VOUT ≥ 1.0 V.

(4) Open-drain version only.

(5) Output overdrive = 10%.

(6) Specifications subject to change without notice.