LT1769IGN Linear Technology, LT1769IGN Datasheet - Page 16

• Manufacturer Part Number: LT1769IGN
• Description: IC CHARGER BATT CONST V/I 28SSOP
• Manufacturer: Linear Technology

Specifications of LT1769IGN

• Function: Charge Management
• Battery Type: Lead Acid, Li-Ion, NiCd, NiMH
• Voltage - Supply: 8 V ~ 25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP (0.150", 3.95mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

PACKAGE
RELATED PARTS
LT1769
PART NUMBER
LT1372/LT1377 500kHz/1MHz Step-Up Switching Regulators
LT1376
LT1505
LT1510
LT1511
LT1512/LT1513 SEPIC Battery Chargers
LTC1729
LTC1759
LTC1960
16
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
0.0075 – 0.0098
(0.191 – 0.249)
* DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone]
0.015 0.004
(0.38 0.10)
6.60 0.10
DESCRIPTION
500kHz Step-Down Switching Regulator
High Current, High Efficiency Battery Charger
Constant-Voltage/Constant-Current Battery Charger
Constant-Voltage/Constant-Current Battery Charger
Li-Ion Battery Charger Termination Controller
SMBus Smart Battery Charger
Dual Battery Charger and Selector with SPI Interface
(.0036 – .0079)
(0.406 – 1.270)
0.09 – 0.20
0.016 – 0.050
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
DESCRIPTION
4.50 0.10
45
RECOMMENDED SOLDER PAD LAYOUT
(.169 – .177)
4.30 – 4.50*
(.018 – .030)
0.45 – 0.75
0 – 8 TYP
SEE NOTE 4
(.152)
MILLIMETERS
3.86
(INCHES)
(0.203 – 0.305)
0.008 – 0.012
0.65 BSC
(1.351 – 1.748)
0.053 – 0.069
0.45 0.05
U
(.108)
2.74
1.05 0.10
www.linear.com
0 – 8
28-Lead Plastic SSOP (Narrow .150 Inch)
*DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
4. RECOMMENDED MINIMUM PCB METAL SIZE
SHALL NOT EXCEED 0.150mm (.006") PER SIDE
FOR EXPOSED PAD ATTACHMENT
20-Lead Plastic TSSOP (4.4mm)
(Reference LTC DWG # 05-08-1663)
(Reference LTC DWG # 05-08-1641)
(.0256)
0.65
BSC
Exposed Pad Variation CB
(.0077 – .0118)
0.195 – 0.30
(0.635)
0.0250
BSC
GN Package
FE Package
COMMENTS
High Frequency, Small Inductor, High Efficiency Switchers, 1.5A Switch
High Frequency, Small Inductor, High Efficiency Switcher, 1.5A Switch
Up to 1.5A Charge Current for Lithium-Ion, NiCd and NiMH Batteries
Up to 3A Charge Current for Lithium-Ion, NiCd and NiMH Batteries
V
Preconditioning If Cell < 2.7V, 3hr Time-Out, C/10 Detection, Temp Sensor
Pin, Charger and Battery Detection
94% Efficiency with Input Current Limiting, Up to 8A I
I
94% Efficiency, Synchronous Current Mode PWM
CHARGE
IN
Can Be Higher or Lower Than Battery Voltage
(0.102 – 0.249)
0.004 – 0.009
Up to 6A, Fast Charge, Longer Battery Life, Crisis Management
(.002 – .006)
0.05 – 0.15
(.047)
1.20
MAX
(5.817 – 6.198)
0.229 – 0.244
20 1918 17 16 15
1
2
28
1
3 4 5 6 7 8 9 10
27
2 3
(.252 – .260)
6.40 – 6.60*
26
(.152)
3.86
25
4
24
14 13
5 6 7
LINEAR TECHNOLOGY CORPORATION 1999
(9.804 – 9.982)
23
0.386 – 0.393*
LT/TP 1101 1.5K REV A • PRINTED IN USA
12
22
11
21
8 9 10 11 12
20
FE20 (CB) TSSOP 0203
(.108)
19 18 17
2.74
6.40
CHG
BSC
1615
13 14
(3.810 – 3.988)
0.150 – 0.157**
GN28 (SSOP) 1098
(0.838)
0.033
REF
1769fa