參數(shù)資料
型號(hào): TPS2112PWRG4
廠商: TEXAS INSTRUMENTS INC
元件分類(lèi): 電源管理
英文描述: 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝: GREEN, PLASTIC, TSSOP-8
文件頁(yè)數(shù): 16/21頁(yè)
文件大小: 373K
代理商: TPS2112PWRG4
TPS2112
TPS2113
SLVS446 – DECEMBER 2002
www.ti.com
4
ELECTRICAL CHARACTERISTICS (Continued)
over recommended operating junction temperature range, VI(IN1) = VI(IN2) = 5.5 V, RILIM = 400 (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CURRENT LIMIT CIRCUIT
TPS2112
RILIM = 400
0.51
0.63
0.80
Current limit accuracy
TPS2112
RILIM = 700
0.30
0.36
0.50
A
Current limit accuracy
TPS2113
RILIM = 400
0.95
1.25
1.56
A
TPS2113
RILIM = 700
0.47
0.71
0.99
td
Current limit settling time(1)
Time for short–circuit output current to
settle within 10% of its steady state value.
1
ms
Input current at ILIM
VI(ILIM) = 0 V, IO(OUT) = 0 A
–15
0
A
(1) Not tested in production.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VSNS COMPARATOR
VSNS threshold voltage
VI(VSNS) ↑
0.78
0.8
0.82
V
VSNS threshold voltage
VI(VSNS) ↓
0.735
0.755
0.775
V
VSNS comparator hysteresis(1)
30
60
mV
Deglitch of VSNS comparator (both
↑↓)(1)
90
150
220
s
Input current
0 V
≤ VI(VSNS) ≤ 5.5 V
–1
1
A
UVLO
IN1 and IN2 UVLO
Falling edge
1.15
1.25
V
IN1 and IN2 UVLO
Rising edge
1.30
1.35
V
IN1 and IN2 UVLO hysteresis(1)
30
57
65
mV
Internal V
UVLO (the higher of IN1 and IN2)
Falling edge
2.4
2.53
V
Internal VDD UVLO (the higher of IN1 and IN2)
Rising edge
2.58
2.8
V
Internal VDD UVLO hysteresis(1)
30
50
75
mV
UVLO deglitch for IN1, IN2(1)
Falling edge
110
s
(1) Not tested in production.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
REVERSE CONDUCTION BLOCKING
VO(I_block)
Minimumoutput-to-inputvoltage
difference to block switching
EN = high, VI(IN1) = 3.3 V and VI(IN2) = VI(VSNS) =
0 V. Connect OUT to a 5 V supply through a series
1-k
resistor. Let EN = low. Slowly decrease the
supply voltage until OUT connects to IN1.
80
100
120
mV
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
THERMAL SHUTDOWN
Thermal shutdown threshold(1)
TPS211x is in current limit.
135
Recovery from thermal shutdown(1)
TPS211x is in current limit.
125
°C
Hysteresis(1)
10
C
IN2–IN1 COMPARATORS
Hysteresis of IN2–IN1 comparator
0.1
0.2
V
Deglitch of IN2–IN1 comparator, (both
↑↓)(1)
90
150
220
s
(1) Not tested in production.
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