LT1239CS Linear Technology, LT1239CS Datasheet - Page 2

• Manufacturer Part Number: LT1239CS
• Description: IC BATT BACKUP MNGMNT SYS 16SOIC
• Manufacturer: Linear Technology

Specifications of LT1239CS

• Function: Back-Up Management
• Battery Type: Lithium-Ion (Li-Ion); Nickel-Metal Hydride (NiMH)
• Voltage - Supply: 7 V ~ 30 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ABSOLUTE
ELECTRICAL CHARACTERISTICS
(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)
I
I
E/A Output Voltage (Note 5) .... – 0.6V < V
E/A Input Voltage (Note 5) .......... – 0.6V < V
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
LT1239
DESCRIPTION
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
2
PARAMETER
Regulator 1 (Notes 7, 8)
Regulated Output Voltage (V
Line Regulation
Load Regulation
Dropout Voltage (Note 9)
Ground Pin Current (Notes 10, 11)
Adjust Pin Bias Current (Note 12)
MON1
MON2
Input Voltage .............................................. 6V, – 0.6V
Input Current ...................................................... 5mA
(Note 3) .......................... (V
(Note 4) .......................... (V
Voltage
Voltage
W
MAXIMUM
U
ADJ
= V
W W
OUT1
)
IN1
IN2
– 30V) < I
– 30V) < I
RATINGS
CONDITIONS
V
V
I
V
V
V
V
I
I
I
I
I
I
T
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
IN1
IN1
IN1
IN1
IN1
IN1
J
E/A(OUT)
= 25 C
E/A(IN)
U
= 4.3V, I
= 4.8V to 24V, I
= 5V, I
= 5V, I
= 5V, I
= 5V, I
MON1
MON2
= 1mA, V
= 1mA, T
= 30mA, T
= 50mA, T
= 0mA, V
= 30mA, V
= 50mA, V
LOAD
LOAD
LOAD
LOAD
< V
< V
< V
< V
OUT
J
IN1
IN1
J
J
IN1
IN1
= 1mA to 30mA, T
= 1mA to 30mA
= 1mA to 50mA, T
= 1mA to 50mA
= 25 C
IN1
IN2
IN2
IN2
= 1mA, T
= 25 C
= 25 C
= 4.3V to 30V
= 3.75V
= 3.75V
= 3.75V
OUT
= 1mA to 30mA
PACKAGE/ORDER
prevents deep discharge damage to the lithium cells. Both
regulators have independent shutdown and current moni-
tor functions.
Consult factory for Industrial and Military grade parts.
J
= 25 C
E/A (OUT)
E/A (IN)
SHDN1
SHDN2
J
J
GND
GND
GND
= 25 C
= 25 C
ADJ
T
JMAX
1
2
3
4
5
6
7
8
16-LEAD PLASTIC SO
= 100 C,
S PACKAGE
TOP VIEW
JA
= 120 C/ W
16
15
14
13
12
11
10
9
3.700
3.650
MIN
OUT 1
I
INPUT 1
5V
OUT 2
I
INPUT 2
NC
MON1
MON2
IN
INFORMATION
U
3.750
3.750
0.15
0.25
0.30
0.80
1.35
TYP
– 12
– 20
– 20
– 30
20
40
2
ORDER PART
W
LT1239CS
NUMBER
3.800
3.825
MAX
0.20
0.40
– 25
– 50
120
1.2
10
30
UNITS
U
mV
mV
mV
mV
mV
mA
mA
nA
V
V
V
V
V
A