參數(shù)資料
型號(hào)： MIC39501-2.5WUTR
廠商： MICREL INC
元件分類： 固定正電壓單路輸出LDO穩(wěn)壓器
英文描述： 2.5 V FIXED POSITIVE LDO REGULATOR, 0.575 V DROPOUT, PSSO5
封裝： ROHS COMPLIANT, TO-263, 5 PIN
文件頁數(shù)： 3/10頁
文件大?。?/td> 1975K
代理商： MIC39501-2.5WUTR
August 2005
3
M9999-082605-B
MIC39500/39501
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
IN
) .......................................–20V to +20V
Enable Voltage (V
EN
) ..................................................+20V
Storage Temperature (T
S
) ........................ –65°C to +150°C
Lead Temperature (soldering, 5 sec.) ....................... 260°C
ESD,
Note 3
Micrel
Operating Ratings
(Note 2)
Supply Voltage (V
IN
) ................................... +2.25V to +16V
Enable Voltage (V
EN
) ..................................................+16V
Maximum Power Dissipation (P
D(max)
) .....................
Note 4
Junction Temperature (T
J
) ........................ –40°C to +125°C
Package Thermal Resistance
TO-263
(θ
JC
) ........................................................2°C/W
TO-220 (
θ
JC
) ........................................................2°C/W
Electrical Characteristics
T
J
= 25°C,
bold
values indicate –40°C ≤ T
J
≤ +125°C; unless noted
V
OUT
Output Voltage
10mA ≤ I
OUT
≤ 5A, V
OUT
+ 1V ≤ V
IN
≤ 16V
OUT
= 10mA, V
OUT
+ 1V ≤ V
IN
IN
= V
OUT
+ 1V, 10mA ≤ I
OUT
–1
2
100
%
Output Voltage Temp. Coefficient,
20
V
OUT
ppm/°C
Note 5
Note 6
Note 7
Output Noise Voltage
V
DO
I
GND
I
GND(do)
I
OUT(lim)
e
n
μV(rms)
Enable Input (MIC39501)
V
EN
I
IN
OUT
= 250mA, V
OUT
OUT
= 2.5A, V
OUT
OUT
= 5A, V
OUT
I
OU
T
= 2.5A, V
IN
= V
OUT
OUT
= 5A, V
IN
= V
OUT
IN
≤ V
OUT(nominal)
– 0.5V, I
OUT
OUT
= 0V, V
IN
= V
OUT
OUT
= 47μF, I
OUT
C
= 100mA, 10Hz to 100kHz
260
250
575
50
mV
mV
mA
A
Enable Input Current
EN
= V
IN
V
0.8
V
V
μA
μA
μA
2.25
30
75
4
20
EN
V
= 0.8V
I
OUT(shdn)
Flag Output (MIC39501)
I
FLG(leak)
Shutdown Output Current
Note 8
10
Output Leakage Current
OH
V
= 16V
0.01
2
%
V
FLG(do)
Output Low Voltage
IN
= 2.250V, I
OL
, = 250μA,
Note 9
V
180
400
Hysteresis
OUT
93
V
FLG
1
Note 1.
Exceeding the absolute maximum ratings may damage the device.
Note 2.
The device is not guaranteed to function outside its operating rating.
Note 3.
Devices are ESD sensitive. Handling precautions recommended.
Note 4.
P
D(max)
= (T
J(max)
– T )
÷ θ
JA
, where
θ
depends upon the printed circuit layout. See “Applications Information.”
JA
Note 5.
Output voltage temperature coefficient is V
OUT(worst case)
÷
(T
J(max)
– T
J(min)
) where T
J(max)
is +125°C and T
J(min)
is –40°C.
Note 6.
V
= V
– V
when V
decreases to 98% of its nominal output voltage with V
= V
+ 1V. For voltages below 2.25V, Dropout volt-
age is the input-to-output voltage differential with the minimum input voltage being 2.25V. Minimum input operating voltage is 2.25V.
Note 7.
I
GND
is the quiescent current. I
IN
= I
GND
+ I
OUT
.
Note 8.
V
EN
≤ 0.8V, V
IN
≤ 8V, and V
OUT
= 0V
Note 9.
For a 2.5V device, V
IN
= 2.250V (device is in dropout).
Symbol
Parameter
10mA
Typ
1
%
%
Load Regulation
V
/T
Dropout Voltage,
Ground Current,
Current Limit
I
V
Condition
Line Regulation
I
I
I
Dropout Ground Pin Current
I
V
–2
≤ 5A
0.2
1
%
= –2%
7.5
mV
+ 1V
mA
= 10mA
+ 1V
≤ 16V
0.06
0.5
= –2%
= –2%
125
400
15
2.1
+ 1V
mA
Min
Max
Units
320
70
logic high (on)
Enable Input Voltage
logic low (off)
35
μA
2
μA
High Threshold
1% of V
Low Threshold
1% of V
1
μA
μA
mV
%
300
mV
OUT
%
99.2
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