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参数资料
| 型号： | LT1239CS#TR |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封装： | 0.150 INCH, PLASTIC, SOP-16 |
| 文件页数： | 5/12页 |
| 文件大小： | 235K |
| 代理商： | LT1239CS#TR |
2
LT1239
DESCRIPTION
U
ing circuitry. A low-battery detector with a 5V threshold
powers down the second regulator and the error amplifier
to limit the discharge voltage of the backup cells. This
prevents deep discharge damage to the lithium cells. Both
regulators have independent shutdown and current moni-
tor functions.
LT1239CS
ORDER PART
NUMBER
Consult factory for Industrial and Military grade parts.
TJMAX = 100°C, θJA = 120°C/ W
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Regulator 1 (Notes 7, 8)
Regulated Output Voltage (VADJ = VOUT1)VIN1 = 4.3V, IOUT = 1mA, TJ = 25°C
3.700
3.750
3.800
V
VIN1 = 4.8V to 24V, IOUT = 1mA to 30mA
q
3.650
3.750
3.825
V
Line Regulation
ILOAD = 1mA, VIN1 = 4.3V to 30V
q
210
mV
Load Regulation
VIN1 = 5V, ILOAD = 1mA to 30mA, TJ = 25°C– 12
– 25
mV
VIN1 = 5V, ILOAD = 1mA to 30mA
q
–20
– 50
mV
VIN1 = 5V, ILOAD = 1mA to 50mA, TJ = 25°C– 20
mV
VIN1 = 5V, ILOAD = 1mA to 50mA
– 30
mV
Dropout Voltage (Note 9)
ILOAD = 1mA, TJ = 25°C
0.15
0.20
V
ILOAD = 30mA, TJ = 25°C
0.25
0.40
V
ILOAD = 50mA, TJ = 25°C
0.30
V
Ground Pin Current (Notes 10, 11)
ILOAD = 0mA, VIN1 = 3.75V
q
20
30
A
ILOAD = 30mA, VIN1 = 3.75V
q
0.80
1.2
mA
ILOAD = 50mA, VIN1 = 3.75V
1.35
mA
Adjust Pin Bias Current (Note 12)
TJ = 25°C
40
120
nA
ELECTRICAL CHARACTERISTICS
PACKAGE/ORDER INFORMATION
W
U
(Note 1)
Input 1 Voltage ......................................................
±30V
Input 2 Voltage ............................................. 30V, – 0.6V
Output 1 Voltage ........................................... 30V, – 0.6V
Output 2 Voltage ............................................. 6V, – 0.6V
Adjust Pin Current ................................................ 10mA
SHDN1, SHDN2 (Note 2)
Input Voltage .............................................. 6V, – 0.6V
Input Current ...................................................... 5mA
IMON1 Voltage
(Note 3) .......................... (VIN1 – 30V) < IMON1 < VIN1
IMON2 Voltage
(Note 4) .......................... (VIN2 – 30V) < IMON2 < VIN2
E/A Output Voltage (Note 5) .... – 0.6V < VE/A(OUT) < VIN2
E/A Input Voltage (Note 5) .......... – 0.6V < VE/A(IN) < VIN2
5V Input Voltage ............................................. 6V, – 0.6V
Operating Temperature Range ......................... 0 to 70
°C
Junction Temperature Range .............................(Note 6)
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
ABSOLUTE MAXIMUM RATINGS
W
WW
U
TOP VIEW
S PACKAGE
16-LEAD PLASTIC SO
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
ADJ
GND
SHDN1
GND
SHDN2
E/A (IN)
E/A (OUT)
OUT 1
IMON1
INPUT 1
5VIN
OUT 2
IMON2
INPUT 2
NC
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