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LTC3559EUD#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
LTC3559/LTC3559-1
22
3559fb
The Output Voltage of a Buck Regulator Is Programmed for 3.3V. When BAT Voltage Approaches 3.3V, the Regulator Operates in
Dropout and the Output Voltage Will Be BAT – (I
LOAD
• 0.6). An LED at CHRG Gives a Visual Indication of the Battery Charger State.
A 3-Resistor Bias Network for NTC Sets Hot and Cold Trip Points at Approximately 55°C and 0°C
V
CC
NTC
CHRG
PROG
SUSP
HPWR
EN1
4.7μH
2.2μF
10μF
324k
1.02M
649k
806k
10μF
22pF
22pF
UP TO
950mA
LTC3559/
LTC3559-1
GND EXPOSED PAD
1μF
110k510Ω
100k
NTC
NTH50603N01
4.7μH
887Ω
EN2
MODE
BAT
ADAPTER
4.5V TO 5.5V
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)
1.8V AT
400mA
3.3V AT
400mA
28.7k
3559 TA03
+
TYPICAL APPLICATIONS
Buck Regulator Effi ciency vs I
LOAD
Buck Regulator Effi ciency vs I
LOAD
I
LOAD
(mA)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.1 10 100 1000
3559 TA02b
0
1
PV
IN
= 2.7V
PV
IN
= 4.2V
V
OUT
= 1.8V
Burst Mode
OPERATION
PULSE SKIP
MODE
I
LOAD
(mA)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.1 10 100 1000
3559 TA02c
0
1
PV
IN
= 4.2V
V
OUT
= 3.3V
Burst Mode
OPERATION
PULSE SKIP
MODE
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.
LTC3559/LTC3559-1
24
3559fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2007
LT 0508 REV B • PRINTED IN USA
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PART NUMBER DESCRIPTION COMMENTS
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LTC3552 Standalone Linear Li-Ion Battery Charger with Adjustable
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Synchronous Buck Converter, Effi ciency: >90%, Adjustable Outputs at
800mA and 400mA, Charge Current Programmable Up to 950mA, USB
Compatible, 5mm × 3mm DFN16 Package
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Synchronous Buck Converter, Effi ciency: >90%, Outputs 1.8V at 800mA
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Compatible
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Seamless Transition Between Input Power Sources: Li-Ion Battery, USB
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Full-Featured Li-Ion Battery Charger with Accurate USB Current Limiting
(500mA/100mA) Pin-Selectable Burst Mode
Operation, Hot Swap
TM
Output for SDIO and Memory Cards, 4mm × 4mm QFN24 Package
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Manager
Seamless Transition Between 2-Cell Battery, USB and AC Wall Adapter
Input Power Sources, Main Output: Fixed 3.3V Output, Core Output:
Adjustable From 0.8V to V
BATT(MIN)
, Hot Swap Output for Memory Cards,
Power Supply Sequencing: Main and Hot Swap Accurate USB Current
Limiting, High Frequency Operation: 1MHz, High Effi ciency: Up to 92%,
4mm × 4mm QFN24 Package
LTC4080 500mA Standalone Charger with 300mA Synchronous
Buck
Charges Single-Cell Li-Ion Batteries, Timer Termination +C/10, Thermal
Regulation, Buck Output: 0.8V to V
BAT
, Buck Input V
IN
: 2.7V to 5.5V, 3mm
× 3mm DFN10 Package
Hot Swap is a trademark of Linear Technology Corporation.
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LTC3559EUD#PBF

Mfr. #:
Buy LTC3559EUD#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management Low Power USB Charger, Dual Buck Regulator in 3x3 DFN
Lifecycle:
New from this manufacturer.
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