參數(shù)資料
型號(hào)： TPS728XX
廠商： Texas Instruments, Inc.
英文描述： 200mA Low-Dropout Linear Regulator with Pin-Selectable Dual-Voltage Level Output
中文描述： 200mA低與品差線性穩(wěn)壓器可選雙電壓電平輸出
文件頁數(shù)： 3/22頁
文件大小： 763K
代理商： TPS728XX
www.ti.com
ELECTRICAL CHARACTERISTICS
Over operating temperature range (T
J
= –40
°
C to +125
°
C), V
IN
= V
OUT(TYP)
+ 0.5V or 2.7V, whichever is greater;
I
OUT
= 0.5mA, V
SET
= V
EN
= V
IN
, C
OUT
= 1.0
μ
F, unless otherwise noted. Typical values are at T
J
= +25
°
C.
TPS728xx Series
SBVS095–AUGUST 2007
PARAMETER
Input voltage range
TEST CONDITIONS
MIN
2.7
–2.5
TYP
MAX
6.5
+2.5
UNIT
V
mV
V
IN
Nominal
Over V
IN
, I
OUT
,
temperature
T
J
= +25
°
C, V
SET
= high/low
V
OUT
+ 0.5V
≤
V
IN
≤
6.5V,
0mA
≤
I
OUT
≤
200mA, V
SET
= high/low
100
μ
A to 200mA in 1
μ
s,
200mA to 100
μ
A in 1
μ
s, C
OUT
= 1
μ
F
V
OUT(1)
DC output accuracy
–3.0
+3.0
%
Δ
V
OUT
Load transient
±60.0
mV
V
O
Output voltage range
0.9
3.6
V
V
OUT(NOM)
+ 0.5V
≤
V
IN
≤
6.5V,
I
OUT
= 5mA
0mA
≤
I
OUT
≤
200mA
V
IN
= V
OUT(NOM)
– 0.1V, I
OUT
= 200mA
V
OUT
= 0.9
×
V
OUT(NOM)
I
OUT
= 0mA
I
OUT
= 200mA
V
EN
≤
0.4V, 2.7V
≤
V
IN
< 4.5V,
T
J
= –40
°
C to +85
°
C
Δ
V
O
/
Δ
V
IN
Line regulation
130
μ
V/V
Δ
V
O
/
Δ
I
OUT
V
DO
I
CL
Load regulation
Dropout voltage
(2)
Output current limit
75
μ
V/mA
mV
mA
μ
A
μ
A
230
340
50
120
400
575
80
240
I
GND
Ground pin current
I
SHDN
Shutdown current (I
GND
)
0.10
1.0
μ
A
f = 100Hz
f = 1kHz
f = 10kHz
f = 100kHz
65
65
55
40
dB
dB
dB
dB
V
IN
= 3.8V,
V
OUT
= 2.8V,
I
OUT
= 200mA
PSRR
Power-supply rejection ratio
BW = 100Hz to 100kHz, V
IN
= 3.3V,
V
OUT
= 2.8V, I
OUT
= 10mA
V
N
Output noise voltage
75
×
V
OUT
μ
V
RMS
Transition time (low-to-high)
V
OUT
= V
OUT_LOW
to V
OUT_HIGH
V
OUT
= 97%
×
V
OUT_HIGH
Startup time
(3)
Shutdown time
(4)
VSET high (output V
OUT2
selected),
or enable pin high (enabled)
VSET low (output V
OUT1
selected),
or enable pin low (disabled)
Enable and select pin currents
Undervoltage lockout
Hysteresis
V
OUT_LOW
= 1.8V, V
OUT_HIGH
= 3.15V,
I
OUT
t
TR
60
μ
s
t
STR
t
SHUT
C
OUT
= 1.0
μ
F
R
L
=
∞
, C
OUT
= 1.0
μ
F, V
OUT
= 2.8V
160
μ
s
μ
s
180
(5)
V
HI
1.2
V
IN
V
V
LO
0
0.4
V
I
EN
, I
VSET
EN = VSET = 6.5V
V
IN
rising, V
SET
= high/low
V
IN
falling, V
SET
= high/low
Shutdown, temperature increasing
Reset, temperature decreasing
0.04
2.51
230
+160
+140
1.0
2.65
μ
A
V
mV
°
C
°
C
°
C
2.38
UVLO
T
SD
Thermal shutdown temperature
T
J
Operating junction temperature
–40
+125
(1)
(2)
(3)
(4)
(5)
The output voltage for V
= low/high is programmed at the factory.
V
is not measured for devices with V
OUT(NOM)
< 2.8V because minimum V
IN
= 2.7V.
Time from V
EN
= 1.2V to V
OUT
= 97% (V
OUT(NOM)
).
Time from V
= 0.4V to V
= 5% (V
).
See
Shutdown
in the
Application Information
section for more details.
Copyright 2007, Texas Instruments Incorporated
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