參數(shù)資料
型號： TPS7348y
廠商： Texas Instruments, Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： Low-Dropout Voltage Regulators(帶RESET功能，低壓差PMOS穩(wěn)壓器)
中文描述： 低壓差穩(wěn)壓器（帶復(fù)位功能，PMOS的低壓差穩(wěn)壓器）
文件頁數(shù)： 8/37頁
文件大?。?/td> 839K
代理商： TPS7348Y
TPS7301Q, TPS7333Q, TPS7348Q, TPS7350Q
LOW-DROPOUT VOLTAGE REGULATORS
WITH INTEGRATED DELAYED RESET FUNCTION
SLVS124D – JUNE 1995 – REVISED JANUARY 1997
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TPS7333Q electrical characteristics at I
O
= 10 mA, V
I
= 4.3 V, EN = 0 V, C
O
= 4.7
μ
F(CSR
= 1
),
SENSE shorted to OUT (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TJ
25
°
C
MIN
TYP
MAX
UNIT
Output voltage
VI = 4.3 V,
4.3 V
≤
VI
≤
10 V,
IO = 10 mA
5 mA
≤
IO
≤
500 mA
3.3
V
–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
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
25
°
C
3.23
3.37
IO= 10 mA
IO = 10 mA,
VI= 3 23 V
VI = 3.23 V
4.5
7
8
Dropout voltage
IO= 100 mA
IO = 100 mA,
VI= 3 23 V
VI = 3.23 V
44
60
mV
80
IO= 500 mA
IO = 500 mA,
VI= 3 23 V
VI = 3.23 V
235
300
400
Pass-element series resistance
(3.23 V – VO)/IO,
(3.23 V VO)/IO,
IO = 500 mA
VI = 3.23 V,
VI 3.23 V,
0.44
0.6
0.8
Input regulation
VI= 4 3 V to 10 V
VI = 4.3 V to 10 V,
μ
≤
50
A
IO
≤
500 mA
6
23
mV
29
Output regulation
l i
IO= 5 mA to 500 mA
IO = 5 mA to 500 mA, 4.3 V
VI
10 V
4 3 V
≤
≤
21
38
mV
75
IO= 50
μ
A to 500 mA 4 3 V
≤
IO = 50
A to 500 mA, 4.3 V
VI
≤
10 V
31
60
mV
120
Ripple rejection
f = 120 Hz
IO= 50
μ
IO = 50
A
43
51
dB
40
IO= 500 mA
IO = 500 mA
39
49
36
Output noise-spectral density
f = 120 Hz
2
μ
V/
√
Hz
Output noise voltage
≤
≤
10 Hz
f
100 kHz,
CSR = 1
CO = 4.7
μ
F
CO = 10
μ
F
CO = 100
μ
F
25
°
C
25
°
C
274
228
Vrms
μ
25
°
C
159
RESET trip-threshold voltage
VO decreasing
–40
°
C to 125
°
C
2.868
V
RESET hysteresis voltage
25
°
C
25
°
C
18
mV
RESET output low voltage
VI= 2 8 V
VI = 2.8 V,
IO(RESET)= –1 mA
IO(RESET) = –1 mA
0.17
0.4
0.4
V
–40
°
C to 125
°
C
CSR refers to the total series resistance, including the 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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