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TPS71701 PDF预览

TPS71701

更新时间: 2024-10-28 07:04:51
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德州仪器 - TI 稳压器
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描述
Low Noise, High-Bandwidth PSRR Low-Dropout 150mA Linear Regulator

TPS71701 数据手册

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TPS717xx  
www.ti.com ..................................................................................................................................................... SBVS068EFEBRUARY 2006REVISED MAY 2008  
ELECTRICAL CHARACTERISTICS  
Over operating temperature range (TJ = –40°C to +125°C), VIN = VOUT(TYP) + 0.5V or 2.5V, whichever is greater;  
IOUT = 0.5mA, VEN = VIN, COUT = 1.0µF, CNR = 0.01µF, unless otherwise noted. For TPS71701, VOUT = 2.8V.  
Typical values are at TJ = +25°C.  
PARAMETER  
TEST CONDITIONS  
MIN  
2.5  
TYP  
MAX  
6.5  
UNIT  
V
VIN  
VFB  
Input voltage range(1)  
Internal reference (TPS71701)  
Output voltage range (TPS71701)  
Nominal  
0.790  
0.9  
0.800  
0.810  
V
VOUT  
6.5 – VDO  
+0.06  
V
TJ = +25°C, 1.6V VIN 6.5V  
–0.05  
%
VOUT  
Output accuracy(1)  
Over VIN, IOUT  
,
VOUT + 0.5V VIN 6.5V  
0mA IOUT 150mA  
–3.0  
±1.5  
+3.0  
%
Temp(2)  
VOUT(NOM) + 0.5V VIN 6.5V,  
IOUT = 5mA  
(1)  
ΔVOUT/ ΔVIN Line regulation  
ΔVOUT/ ΔIOUT Load regulation  
125  
120  
170  
325  
325  
µV/V  
µV/mA  
mV  
0mA IOUT 150mA  
Dropout voltage(3)  
(VIN = VOUT(NOM) – 0.1V)  
VDO  
IOUT = 150mA  
300  
500  
575  
80  
ICL (Fixed)  
Output current limit (fixed output)  
VOUT = 0.9 × VOUT(NOM)  
VOUT = 0.9 × VOUT(NOM)  
200  
200  
mA  
ICL  
Output current limit (TPS71701)  
mA  
(Adjustable)  
IOUT = 0.1mA  
IOUT = 150mA  
50  
µA  
µA  
IGND  
Ground pin current  
Shutdown current  
100  
VEN 0.4V, 2.5V VIN < 4.5V,  
0.20  
0.90  
1.5  
1.0  
µA  
µA  
TJ = –40°C to +85°C  
ISHDN  
(IGND  
)
VEN 0.4V, 4.5V VIN 6.5V,  
TJ = –40°C to +85°C  
IFB  
Feedback pin current (TPS71701)  
0.02  
70  
µA  
dB  
dB  
dB  
dB  
dB  
f = 100Hz  
f = 1kHz  
70  
Power-supply rejection ratio  
VIN = 3.8V, VOUT = 2.8V,  
IOUT = 150mA  
PSRR  
f = 10kHz  
f = 100kHz  
f = 1MHz  
67  
67  
45  
CNR = none  
(fixed output, TPS71701)  
95 × VOUT  
µVRMS  
Output noise voltage  
BW = 100Hz to 100kHz,  
VIN = 3.8V, VOUT = 2.8V,  
IOUT = 10mA  
CNR = 0.001µF  
25 × VOUT  
12.5 × VOUT  
11.5 × VOUT  
0.700  
µVRMS  
µVRMS  
µVRMS  
ms  
VN  
CNR = 0.01µF  
CNR = 0.1µF  
Startup time  
0.9V VOUT 1.6V, CNR = 0.001µF  
TSTR  
VOUT = 90% VOUT(NOM),  
RL = 19, COUT = 1.0µF  
1.6V < VOUT < VMAX, CNR = 0.01µF  
0.160  
ms  
V
IN 5.5V  
1.2  
1.25  
0
6.5  
6.5  
0.4  
V
V
V
Enable high  
(enabled)  
VEN(HI)  
VEN(LO)  
5.5V < VIN 6.5V  
Enable low  
(shutdown)  
IEN(HI)  
UVLO  
Enable pin current, enabled  
Under-voltage lockout  
Hysteresis  
EN = 6.5V  
0.02  
2.45  
150  
1.0  
µA  
V
VIN rising  
2.41  
–40  
2.49  
VIN falling  
mV  
°C  
°C  
°C  
Shutdown, temperature increasing  
Reset, temperature decreasing  
+160  
+140  
TSD  
TJ  
Thermal shutdown temperature  
Operating junction temperature  
+125  
(1) Minimum VIN = VOUT + VDO or 2.5V, whichever is greater.  
(2) Does not include external resistor tolerances.  
(3) VDO is not measured for devices with VOUT(NOM) < 2.6V because minimum VIN = 2.5V.  
Copyright © 2006–2008, Texas Instruments Incorporated  
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