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參數資料
| 型號： | TPS71H48Q |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | LOW-DROPOUT VOLTAGE REGULATORS |
| 中文描述： | 低壓差電壓調節器 |
| 文件頁數： | 6/40頁 |
| 文件大小： | 634K |
| 代理商： | TPS71H48Q |
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TPS71H01Q, TPS71H33Q, TPS71H48Q, TPS71H50Q
LOW-DROPOUT VOLTAGE REGULATORS
SLVS152B
–
NOVEMBER 1996
–
REVISED AUGUST 2002
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
MIN
2.5
MAX
UNIT
TPS71H01Q
10
Input voltage V
Input voltage, VI
TPS71H33Q
3.77
10
V
TPS71H48Q
5.2
10
TPS71H50Q
5.33
10
High-level input voltage at EN, VIH
Low-level input voltage at EN, VIL
Output current range, IO
Operating virtual junction temperature range, TJ
Minimum input voltage defined in the recommended operating conditions is the maximum specified output voltage plus dropout voltage at the
maximum specified load range. Since dropout voltage is a function of output current, the usable range can be extended for lighter loads. To
calculate the minimum input voltage for your maximum output current, use the following equation: VI(min) = VO(max) + VDO(max load)
Because the TPS71H01 is programmable, rDS(on) should be used to calculate VDO before applying the above equation. The equation for
calculating VDO from rDS(on) is given in Note 2 in the electrical characteristics table. The minimum value of 2.5 V is the absolute lower limit for
the recommended input voltage range for the TPS71H01.
2
V
0.5
V
0
500
mA
°
C
–
40
125
electrical characteristics at I
O
= 10 mA, EN = 0 V, C
O
= 4.7
μ
F/CSR
= 1
, SENSE/FB shorted to OUT
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
§
TJ
TPS71H01Q, TPS71H33Q
TPS71H48Q, TPS71H50Q
MIN
TYP
285
UNIT
MAX
350
Ground current (active mode)
EN
0.5 V,
≤
0 mA
≤
IO
≤
500 mA
VI = VO + 1 V,
25
°
C
–
40
°
C to 125
°
C
25
°
C
–
40
°
C to 125
°
C
25
°
C
–
40
°
C to 125
°
C
25
°
C
–
40
°
C to 125
°
C
25
°
C
–
40
°
C to 125
°
C
–
40
°
C to 125
°
C
460
μ
A
Input current (standby mode)
EN = VI,
2 7 V
≤
≤
2.7 V
VI
10 V
0.5
2
μ
A
Output current limit
VO = 0,
VI = 10 V
1.2
2
A
2
Pass-element leakage current in standby
Pass element leakage current in standby
mode
EN = VI,
2 7 V
≤
≤
2.7 V
VI
10 V
0.5
1
μ
A
PG leakage current
Normal operation,
VPG = 10 V
0.02
0.5
0.5
μ
A
Output voltage temperature coefficient
61
75
ppm/
°
C
°
C
Thermal shutdown junction temperature
165
EN logic high (standby mode)
2.5 V
≤
VI
≤
6 V
6 V
≤
VI
≤
10 V
–
40
°
C to 125
°
C
2
V
2.7
EN logic low (active mode)
2 7 V
≤
≤
2.7 V
VI
10 V
25
°
C
0.5
V
–
40
°
C to 125
°
C
25
°
C
25
°
C
–
40
°
C to 125
°
C
25
°
C
–
40
°
C to 125
°
C
25
°
C
–
40
°
C to 125
°
C
0.5
EN hysteresis voltage
50
mV
EN input current
≤
≤
0 V
VI
10 V
–
0.5
0.5
–
0.5
0.5
μ
A
Minimum V for active pass element
Minimum VI for active pass element
2.05
2.5
V
2.5
Minimum VIfor valid PG
Minimum VI for valid PG
μ
A
IPG= 300
μ
A
IPG= 300
1.06
1.5
1.9
V
CSR (compensation series resistance) refers to the total series resistance, including the equivalent series resistance (ESR) of the capacitor, any
series resistance added externally, and PWB trace resistance to CO.
§
Pulse-testing techniques are used to maintain virtual junction temperature as close as possible to ambient temperature; thermal effects must
be taken into account separately.
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