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參數(shù)資料
| 型號： | LT1239CS |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Backup Battery Management Circuit |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SOP-16 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 246K |
| 代理商： | LT1239CS |
2
LT1239
DESCRIPTIO
N
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.
T
JMAX
= 100
°
C,
θ
JA
= 120
°
C/W
PARAMETER
Regulator 1 (Notes 7, 8)
Regulated Output Voltage (V
ADJ
= V
OUT1
)
CONDITIONS
MIN
TYP
MAX
UNITS
V
IN1
= 4.3V, I
OUT
= 1mA, T
J
= 25
°
C
V
IN1
= 4.8V to 24V, I
OUT
= 1mA to 30mA
I
LOAD
= 1mA, V
IN1
= 4.3V to 30V
V
IN1
= 5V, I
LOAD
= 1mA to 30mA, T
J
= 25
°
C
V
IN1
= 5V, I
LOAD
= 1mA to 30mA
V
IN1
= 5V, I
LOAD
= 1mA to 50mA, T
J
= 25
°
C
V
IN1
= 5V, I
LOAD
= 1mA to 50mA
I
LOAD
= 1mA, T
J
= 25
°
C
I
LOAD
= 30mA, T
J
= 25
°
C
I
LOAD
= 50mA, T
J
= 25
°
C
I
LOAD
= 0mA, V
IN1
= 3.75V
I
LOAD
= 30mA, V
IN1
= 3.75V
I
LOAD
= 50mA, V
IN1
= 3.75V
T
J
= 25
°
C
3.700
3.650
3.750
3.750
2
–12
–20
–20
–30
0.15
0.25
0.30
20
0.80
1.35
40
3.800
3.825
10
–25
–50
V
V
G
Line Regulation
Load Regulation
G
mV
mV
mV
mV
mV
G
Dropout Voltage (Note 9)
0.20
0.40
V
V
V
Ground Pin Current (Notes 10, 11)
G
G
30
1.2
μ
A
mA
mA
nA
Adjust Pin Bias Current (Note 12)
120
ELECTRICAL CHARACTERISTICS
PACKAGE/ORDER I
FOR
ATIO
W
U
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
I
MON1
Voltage
(Note 3).......................... (V
IN1
– 30V) < I
MON1
< V
IN1
I
MON2
Voltage
(Note 4).......................... (V
IN2
– 30V) < I
MON2
< V
IN2
E/A Output Voltage (Note 5) .... –0.6V < V
E/A(OUT)
< V
IN2
E/A Input Voltage (Note 5)..........–0.6V < V
E/A(IN)
< V
IN2
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
AXI
U
RATIU
W
W
W
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
GND
SHDN2
E/A (IN)
E/A (OUT)
OUT 1
I
MON1
INPUT 1
5V
IN
OUT 2
I
MON2
INPUT 2
NC
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