參數(shù)資料
型號： TPS7350Y
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(帶延遲復(fù)位功能的低壓差穩(wěn)壓器)
中文描述： 低壓差穩(wěn)壓器（帶延遲復(fù)位功能的低壓差穩(wěn)壓器）
文件頁數(shù)： 6/37頁
文件大小： 839K
代理商： TPS7350Y
TPS7301Q, TPS7333Q, TPS7348Q, TPS7350Q
LOW-DROPOUT VOLTAGE REGULATORS
WITH INTEGRATED DELAYED RESET FUNCTION
SLVS124D – JUNE 1995 – REVISED JANUARY 1997
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
MIN
2.5
MAX
UNIT
Input voltage VI
V
TPS7301Q
10
V
TPS7333Q
3.77
10
Input voltage, VI
TPS7348Q
5.2
10
TPS7350Q
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, VDO,
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 the maximum load current used in a given application, use the following equation:
VI(min)
Because the TPS7301 s 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 TPS7301.
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)
2
V
0.5
V
0
500
mA
°
C
–40
125
VO(max)
VDO(max load)
PARAMETER
TEST CONDITIONS§
TJ
TPS7301Q, TPS7333Q
TPS7348Q, TPS7350Q
UNIT
MIN
TYP
340
MAX
400
Ground current (active mode)
EN
≤
0.5 V,
0 mA
≤
IO
≤
500 mA
VI = VO + 1 V,
25
°
C
μ
A
–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
550
Input current (standby mode)
EN = VI,
2 7 V
≤
2.7 V
VI
≤
10 V
0.01
0.5
μ
A
2
Output current limit
VO= 0 V
VO = 0 V,
VI= 10 V
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
0.01
0.5
μ
A
1
RESET leakage current
Normal operation, V at RESET = 10 V
0.02
0.5
μ
A
0.5
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
0.001
0.5
μ
A
–0.5
0.5
Minimum VIfor active pass element
Minimum VI for active pass element
2.05
2.5
V
2.5
Minimum VIfor valid RESET
Minimum VI for valid RESET
IO(RESET)= –300
μ
IO(RESET) = –300
A
1
1.5
V
1.9
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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