LT1571-1 LINER [Linear Technology], LT1571-1 Datasheet - Page 2

• Manufacturer Part Number: LT1571-1
• Description: Constant-Current/ Constant-Voltage Battery Charger with Preset Voltage and Termination Flag
• Manufacturer: LINER [Linear Technology]

ABSOLUTE AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
LT1571 Series
Supply Voltage (V
BOOST Pin Voltage with Respect to V
FLAG Pin Voltage ..................................................... V
I
Switch Current (Peak) .............................................. 2A
Storage Temperature Range ................. – 65 C to 150 C
Consult factory for Industrial and Military grade parts.
2
BAT
(Average)........................................................ 1.5A
SELECT
** FOUR CORNER PINS ARE FUSED TO
**GND
BOOST
**GND
SENSE
* V
BAT2
FLAG
TOGETHER CLOSE TO THE PINS
INTERNAL DIE ATTACH PADDLE FOR
HEAT SINKING. CONNECT THESE FOUR
PINS TO EXPANDED PC LANDS FOR
PROPER HEAT SINKING
ORDER PART NUMBER
16-LEAD NARROW PLASTIC SSOP
SW
CC1
T
AND V
JMAX
1
2
3
4
5
6
7
8
LT1571EGN-5
= 125 C,
CC2
GN PACKAGE
TOP VIEW
SHOULD BE CONNECTED
CC
W
) .............................................. 28V
JA
= 75 C/ W
16
15
14
13
12
11
10
9
W W
GND**
V
V
CAP
PROG
V
BAT
GND**
CC1
CC2
C
*
*
U
CC
................. 20V
W
** ALL GND PINS ARE FUSED TO INTERNAL DIE ATTACH
* V
CLOSE TO THE PINS
PADDLE FOR HEAT SINKING. CONNECT THESE PINS TO
EXPANDED PC LANDS FOR PROPER HEAT SINKING
40 C/W THERMAL RESISTANCE ASSUMES AN INTERNAL
GROUND PLANE DOUBLING AS A HEAT SPREADER
CC1
U
**GND
**GND
**GND
BOOST
**GND
**GND
**GND
**GND
AND V
SENSE
FLAG
ORDER PART NUMBER
V
SW
28-LEAD NARROW PLASTIC SSOP
NC
NC
FB
T
CC2
JMAX
10
11
12
13
14
SHOULD BE CONNECTED TOGETHER
1
2
3
4
5
6
7
8
9
U
LT1571EGN-1
(Note 1)
= 125 C,
CC
GN PACKAGE
TOP VIEW
JA
Operating Ambient
Temperature Range (Note 2) .................. – 40 C to 85 C
Operating Junction
Temperature Range .............................. – 40 C to 125 C
Lead Temperature (Soldering, 10 sec).................. 300 C
= 40 C/ W
28
27
26
25
24
23
22
21
20
19
18
17
16
15
GND**
GND**
GND**
GND**
V
V
CAP
PROG
V
BAT
GND**
GND**
GND**
GND**
CC1
CC2
C
*
*
** ALL GND PINS ARE FUSED TO INTERNAL DIE ATTACH
* V
CLOSE TO THE PINS
PADDLE FOR HEAT SINKING. CONNECT THESE PINS TO
EXPANDED PC LANDS FOR PROPER HEAT SINKING
40 C/W THERMAL RESISTANCE ASSUMES AN INTERNAL
GROUND PLANE DOUBLING AS A HEAT SPREADER
CC1
SELECT
AND V
**GND
**GND
**GND
BOOST
**GND
**GND
**GND
**GND
SENSE
ORDER PART NUMBER
BAT2
FLAG
SW
28-LEAD NARROW PLASTIC SSOP
NC
CC2
T
JMAX
10
11
12
13
14
SHOULD BE CONNECTED TOGETHER
LT1571EGN-2
1
2
3
4
5
6
7
8
9
= 125 C,
GN PACKAGE
TOP VIEW
JA
= 40 C/ W
28
27
26
25
24
23
22
21
20
19
18
17
16
15
GND**
GND**
GND**
GND**
V
V
CAP
PROG
V
BAT
GND**
GND**
GND**
GND**
CC1
CC2
C
*
*