TL7770-5, TL7770-12

DUAL POWER-SUPPLY SUPERVISORS

SLVS019F – OCTOBER 1987 – REVISED JULY 1999

5

POST OFFICE BOX 655303

electrical characteristics over recommended operating conditions (unless otherwise noted)

supply supervisor section

PARAMETER

TEST

CONDITIONS†

TL7770-5C

TL7770-12C

TL7770-5I

UNIT

CONDITIONS

MIN

TYP‡

MAX

VOH

High level output voltage

RESET

IOH = –15 mA

VCC–1.5

V

VOH

High-level output voltage

SCR DRIVE

IOH = –20 mA

VCC–1.5

V

VOL

Low-level output voltage

RESET

IOL = 15 mA

0.4

V

TL7770-5 (5-V sense, 1VSU)

4.46

4.64

VIT

Undervoltage input threshold

TL7770-12 (12-V sense, 1VSU)

TA = MIN to MAX

10.68

11.12

V

VIT–

at VSU (negative-going)

TL7770-5, TL7770-12

(programmable sense, 2VSU)

TA = MIN to MAX

1.47

1.53

V

TL7770-5 (5-V sense, 1VSU)

15

Vhys

Hysteresis at VSU

TL7770-12 (12-V sense, 1VSU)

TA = MIN to MAX

36

mV

Vhys

(VIT+ – VIT–)

TL7770-5, TL7770-12

(programmable sense, 2VSU)

TA = MIN to MAX

5

mV

VT

Overvoltage threshold at VSO

TL7770-5, TL7770-12 (VSO)

TA = MIN to MAX

2.48

2.68

V

II

Input current

RESIN

VI = 5.5 V or 0.4 V

–10

µA

II

Input current

VSO

VI = 2.4 V

0.5

2

µA

IOH

High-level output current

RESET

VO = 18 V

50

µA

IOL

Low-level output current

RESET

VO = 0

–50

µA

IOH

Peak output current

SCR DRIVE

Duration = 1 ms

250

mA

† For conditions shown as MIN or MAX, use the appropriate value specified in the recommended operating conditions.

‡ Typical values are at VCC = 5 V, TA = 25°C.

total device

PARAMETER

TEST CONDITIONS†

TL7770-5C

TL7770-12C

TL7770-5I

UNIT

MIN

TYP‡

MAX

Vres§

Power-up reset voltage

VCC = VSU

0.8

1

V

ICC

Supply current

1VSU = 18 V, 2VSU = 2 V,

1RESIN and 2RESIN at VCC

TA = 25°C

5

mA

ICC

Supply current

1RESIN and 2RESIN at VCC,

1VSO and 2VSO at 0 V

TA = MIN to MAX

6.5

mA

† For conditions shown as MIN or MAX, use the appropriate value specified in the recommended operating conditions.

‡ Typical values are at VCC = 5 V, TA = 25°C.

§ This is the lowest voltage at which RESET becomes active.