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参数资料
| 型号： | LTC3559EUD#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC USB CHARGER 16-QFN |
| 标准包装： | 121 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 4.3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN-EP（3x3） |
| 包装： | 管件 |
| 产品目录页面： | 1341 (CN2011-ZH PDF) |
LTC3559/LTC3559-1
Linear USB Battery Charger
with Dual Buck Regulators
FEATURES
Battery Charger
n Standalone USB Charger
n Up to 950mA Charge Current Programmable via
Single Resistor
n HPWR Input Selects 20% or 100% of Programmed
Charge Current
n NTC Input for Temperature Quali?ed Charging
n Internal Timer Termination
n Bad Battery Detection
n CHRG Indicates C/10 or Timeout
Buck Regulators
n 400mA Output Current
n 2.25MHz Constant Frequency Operation
n Zero Current in Shutdown
n Low Noise Pulse Skip Operation or Power Saving
Burst Mode Operation
n Low No-Load Quiescent Current: 35μA
n Available in a Low Pro?le Thermally Enhanced
16-Lead 3mm × 3mm QFN Package
APPLICATIONS
DESCRIPTION
The LTC ? 3559/LTC3559-1 are USB battery chargers with
dual high ef?ciency buck regulators. The parts are 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
quali?ed charging. The CHRG 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 ef?ciencies
greater than 90% over the entire Li-Ion/Polymer range.
A MODE pin provides the ?exibility to place both buck
regulators in a power saving Burst Mode ? operation or a
low noise pulse skip mode.
The LTC3559/LTC3559-1 are offered in a low pro?le ther-
mally enhanced 16-lead (3mm × 3mm) QFN package.
L , LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
n
n
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
1μF
V CC
BAT
PV IN
+
SINGLE
Li-lon CELL
(2.7V TO 4.2V)
NTC
2.2μF
1.74k
PROG
LTC3559
SW1
4.7μH
2.5V
400mA
22pF
655k
10μF
CHRG
SUSP
FB1
309k
DIGITAL
CONTROL
HPWR
EN1
EN2
SW2
FB2
4.7μH
22pF
324k
1.2V
400mA
10μF
MODE
GND
EXPOSED
PAD
649k
3559 TA01
3559fb
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3559EUD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Linear USB Battery Charger with Dual Buck Regulators |
| LTC3560 | 制造商:LINER 制造商全称:Linear Technology 功能描述:2.25MHz, 800mA Synchronous Step-Down Regulator in ThinSOT |
| LTC3560E | 制造商:LINER 制造商全称:Linear Technology 功能描述:2.25MHz, 800mA Synchronous Step-Down Regulator in ThinSOT |
| LTC3560ES6 | 制造商:LINER 制造商全称:Linear Technology 功能描述:2.25MHz, 800mA Synchronous Step-Down Regulator in ThinSOT |
| LTC3560ES6#PBF | 制造商:Linear Technology 功能描述:2.1 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO6 |
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