Datasheet

LTC3559/LTC3559-1
23
3559fb
PACKAGE DESCRIPTION
UD Package
16-Lead Plastic QFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1691)
The Battery Can be Charged with Up to 950mA of Charge Current. Buck Regulator 2 Is Enabled Only After V
OUT1
Is Up to Approximately
0.7V. This Provides a Sequencing Function Which May Be Desirable in Applications Where a Microprocessor Needs to Be Powered Up
Before Peripherals. CHRG Interfaces to a Microprocessor Which Decodes the Battery Charger State
V
CC
NTC
CHRG
PROG
SUSP
HPWR
EN1
4.7μH
2.2μF
10μF
10μF
309k
655k
649k
324k
22pF
22pF
UP TO
950mA
LTC3559/
LTC3559-1
GND EXPOSED PAD
1μF
100k
100k
NTC
NTH50603NO1
4.7μH
887Ω
EN2
MODE
BAT
100k
ADAPTER
4.5V TO 5.5V
TO
MICROPROCESSOR
PV
IN
SW1
FB1
SW2
DIGITALLY
CONTROLLED
FB2
SINGLE
Li-lon CELL
2.7V TO 4.2V (LTC3559)
2.7V TO 4.1V (LTC3559-1)
1.2V AT
400mA
2.5V AT
400mA
3559 TA02
+
TYPICAL APPLICATIONS
3.00 p 0.10
(4 SIDES)
NOTE:
1. DRAWING CONFORMS TO JEDEC PACKAGE OUTLINE MO-220 VARIATION (WEED-2)
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
ON THE TOP AND BOTTOM OF PACKAGE
PIN 1
TOP MARK
(NOTE 6)
0.40 p 0.10
BOTTOM VIEW—EXPOSED PAD
1.45 p 0.10
(4-SIDES)
0.75 p 0.05
R = 0.115
TYP
0.25 p 0.05
1
PIN 1 NOTCH R = 0.20 TYP
OR 0.25 s 45o CHAMFER
15 16
2
0.50 BSC
0.200 REF
0.00 – 0.05
(UD16) QFN 0904
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
1.45 p 0.05
(4 SIDES)
2.10 p 0.05
3.50 p 0.05
0.70 p0.05
0.25 p0.05
0.50 BSC
PACKAGE
OUTLINE
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.