LT1512C LINER [Linear Technology], LT1512C Datasheet - Page 2

• Manufacturer Part Number: LT1512C
• Description: SEPIC Constant-Current/ Constant-Voltage Battery Charger
• Manufacturer: LINER [Linear Technology]

A
Input Voltage .......................................................... 30V
Switch Voltage ........................................................ 40V
S/S Pin Voltage ....................................................... 30V
FB Pin Voltage (Transient, 10ms) ......................... 10V
V
I
Storage Temperature Range ................ – 65 C to 150 C
Ambient Temperature Range
Operating Junction Temperature Range
Lead Temperature (Soldering, 10 sec)................. 300 C
LT1512
V
SYMBOL
V
V
g
A
f
BV
2
ELECTRICAL C
FB
m
REF
IREF
V
IN
FB
BSOLUTE
LT1512C (Note 3) .................................... 0 C to 70 C
LT1512I .............................................. – 40 C to 85 C
LT1512C (Note 3) ............................ – 20 C to 125 C
LT1512I ............................................ – 40 C to 125 C
Short Circuit ......................................... 0 C to 150 C
Pin Voltage (Transient, 10ms) ......................... 10V
= 5V, V
Pin Current .................................................... 10mA
PARAMETER
V
FB Input Current
FB Reference Voltage Line Regulation
I
I
I
Error Amplifier Transconductance
Error Amplifier Source Current
Error Amplifier Sink Current
Error Amplifier Clamp Voltage
Error Amplifier Voltage Gain
V
Switching Frequency
Maximum Switch Duty Cycle
Switch Current Limit Blanking Time
Output Switch Breakdown Voltage
C
FB
FB
FB
FB
C
= 0.6V, V
Pin Threshold
Reference Voltage
Input Current
Reference Voltage Line Regulation
Reference Voltage
W
FB
= V
A
HARA TERISTICS
XI
REF
, I
W
FB
U
= 0V, V
C
W
SW
R
A
and S/S pins open, unless otherwise noted.
TI
U
G
S
CONDITIONS
Measured at FB Pin
V
V
2.7V V
Measured at I
V
V
2.7V V
V
V
High Clamp, V
Low Clamp, V
Duty Cycle = 0%
2.7V V
– 40 C T
C
FB
FB
IFB
FB
FB
I
C
= 0.8V
0 C T
– 40 C T
0 C T
= V
= 0V, V
= 25 A
= V
= V
= V
REF
REF
REF
IREF
IN
IN
IN
J
+ 150mV, V
J
J
C
– 150mV, V
< 20 C (LT1512I)
(Note 2)
25V, V
= 0.8V
25V, V
25V
Consult factory for Military grade parts.
PACKAGE/ORDER I FOR ATIO
FB
FB
J
FB
125 C
125 C
< 0 C (LT1512I)
Pin
= 1.5V
= 1V
NOTE: CONTACT FACTORY CONCERNING 16-LEAD
FUSED-LEAD GN PACKAGE WITH LOWER THERMAL
RESISTANCE
C
C
= 0.8V
= 0.8V
N8 PACKAGE
8-LEAD PDIP
C
C
S/S
I
T
T
V
FB
FB
JMAX
= 1.5V
= 1.5V
JMAX
C
1
2
3
4
= 125 C,
= 125 C,
TOP VIEW
JA
JA
8-LEAD PLASTIC SO
= 100 C/ W (N)
= 130 C/ W (S)
S8 PACKAGE
8
7
6
5
1.233
1.228
– 107
–110
1100
1.70
0.25
MIN
700
120
450
430
400
0.8
10
88
40
35
V
GND
GND S
V
SW
IN
U
1.245
1.245
– 100
– 100
1500
1400
0.01
0.01
1.95
0.40
TYP
130
300
200
500
500
500
25
95
47
1
ORDER PART
W
LT1512CN8
LT1512CS8
LT1512IN8
LT1512IS8
MARKING
NUMBER
S8 PART
1.257
1.262
1900
2300
2400
MAX
1.25
0.03
0.05
2.30
0.52
550
600
– 93
– 90
350
550
580
580
260
1512
1512I
35
UNITS
U
%/V
mho
mho
%/V
V/ V
kHz
kHz
kHz
mV
mV
nA
nA
ns
%
V
V
A
A
A
V
V
V
V
V