參數(shù)資料
型號: TL7770-12CDWR
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源管理
英文描述: 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16
封裝: GREEN, PLASTIC, SOIC-16
文件頁數(shù): 16/19頁
文件大?。?/td> 603K
代理商: TL7770-12CDWR
TL7770-5, TL7770-12
DUAL POWER-SUPPLY SUPERVISORS
SLVS019F – OCTOBER 1987 – REVISED JULY 1999
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating conditions (unless otherwise noted)
supply supervisor section
PARAMETER
TEST
CONDITIONS
TL7770-5Y
TL7770-12Y
UNIT
CONDITIONS
MIN
TYP
MAX
TL7770-5 (5-V sense, 1VSU)
4.46
4.64
VIT
Undervoltage input threshold at VSU
TL7770-12 (12-V sense, 1VSU)
TA = MIN to MAX
10.68
11.12
V
VIT–
(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
VSO
VI = 2.4 V
0.5
A
Typical values are at VCC = 5 V, TA = 25°C.
total device
PARAMETER
TEST CONDITIONS
TL7770-5Y
TL7770-12Y
UNIT
MIN
TYP
MAX
Vres
Power-up reset voltage
VCC = VSU,
VOL = 0.4 V, IOL = 1 mA
0.8
V
ICC
Supply current
1VSU = 18 V, 2VSU = 2 V,
1RESIN and 2RESIN at VCC,
1VSO and 2VSO at 0 V
TA = 25°C
5
mA
Typical values are at VCC = 5 V, TA = 25°C.
This is the lowest voltage at which RESET becomes active.
switching characteristics, VCC = 5 V, CT open, TA = 25°C
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
TEST
CONDITIONS
MIN
TYP
MAX
UNIT
tPLH
Propagation delay time, low-to-high-level output
RESIN
RESET
270
500
ns
tPHL
Propagation delay time, high-to-low-level output
RESIN
RESET
270
500
ns
tr
Rise time
RESET
See Figures 1
75
ns
tf
Fall time
RESET
g
and 3
150
ns
tr
Rise time
RESET
75
ns
tf
Fall time
RESET
50
ns
tw(min)
Minimum effective pulse duration
RESIN
See Figure 2a
150
ns
tw(min)
Minimum effective ulse duration
VSU
See Figure 2b
100
ns
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