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LTC3559EUD

Description
IC 1.05 A BATTERY CHARGE CONTROLLER, 2590 kHz SWITCHING FREQ-MAX, PQCC16, 3 X 3 MM, PLASTIC, MO-220WEED-2, QFN-16, Switching Regulator or Controller
CategoryPower/power management    The power supply circuit   
File Size303KB,24 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric View All

LTC3559EUD Overview

IC 1.05 A BATTERY CHARGE CONTROLLER, 2590 kHz SWITCHING FREQ-MAX, PQCC16, 3 X 3 MM, PLASTIC, MO-220WEED-2, QFN-16, Switching Regulator or Controller

LTC3559EUD Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeQFN
package instructionHVQCCN,
Contacts16
Reach Compliance Codenot_compliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesBATTERY CHARGE CONTROLLER
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage5.5 V
Minimum input voltage4.3 V
Nominal input voltage5 V
JESD-30 codeS-PQCC-N16
JESD-609 codee0
length3 mm
Humidity sensitivity level1
Number of functions1
Number of terminals16
Maximum operating temperature85 °C
Minimum operating temperature
Maximum output current1.05 A
Package body materialPLASTIC/EPOXY
encapsulated codeHVQCCN
Package shapeSQUARE
Package formCHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height0.8 mm
surface mountYES
Switch configurationBUCK
Maximum switching frequency2590 kHz
Temperature levelCOMMERCIAL EXTENDED
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationQUAD
Maximum time at peak reflow temperature20
width3 mm
FEATURES
Battery Charger
Standalone USB Charger
Up to 950mA Charge Current Programmable via
Single Resistor
HPWR Input Selects 20% or 100% of Programmed
Charge Current
NTC Input for Temperature Qualified Charging
Internal Timer Termination
Bad Battery Detection
C
H
R
G indicates C/10 or Timeout
Buck Regulators
400mA Output Current
2.25MHz Constant Frequency Operation
Zero Current in Shutdown
Low Noise Pulse Skip Operation or Power Saving
Burst Mode Operation
Low No Load Quiescent Current: 35μA
LTC3559
Linear USB Battery Charger
with Dual Buck Regulators
DESCRIPTION
The LTC
®
3559 is a USB battery charger with dual high ef-
ficiency buck regulators. The part is ideally suited to power
single cell Li-Ion/Polymer based handheld applications
needing multiple supply rails.
Battery charge current is programmed via the PROG pin
and the HPWR pin, with capability up to 950mA at the BAT
pin. The battery charger has an NTC input for temperature
qualified charging. The
C
H
R
G pin allows battery status to
be monitored continuously during the charging process.
An internal timer controls charger termination.
Each monolithic synchronous buck regulator provides up
to 400mA of output current while operating at efficiencies
greater than 90% over the entire Li-Ion/Polymer range.
A MODE pin provides the flexibility to place both buck
regulators in a power saving Burst Mode operation or a
low noise pulse skip mode.
The LTC3559 is offered in a low profile thermally enhanced
16-lead (3mm
×
3mm) QFN package.
, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology
Corporation. All other trademarks are the property of their respective owners.
Available in a Low Profile Thermally Enhanced
16-Lead 3mm
×
3mm QFN Package
APPLICATIONS
SD/Flash-Based MP3 Players
Low Power Handheld Applications
TYPICAL APPLICATION
USB Charger Plus Dual Buck Regulators
UP TO 500mA
USB (4.3V TO 5.5V)
OR AC ADAPTOR
V
CC
1μF
NTC
1.74k
PROG
CHRG
SUSP
DIGITAL
CONTROL
HPWR
EN1
EN2
MODE
GND
EXPOSED
PAD
SW2
22pF
FB2
649k
3559 TA01
BAT
PV
IN
2.2μF
LTC3559
SW1
22pF
FB1
4.7μH
+
SINGLE
Li-lon CELL
(2.7V TO 4.2V)
2.5V
400mA
655k
309k
10μF
4.7μH
324k
1.2V
400mA
10μF
3559f
1
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