- 您現在的位置：買賣IC網 > PDF目錄384921 > SMB135 (Summit Microelectronics, Inc.) Programmable, USB/AC, Switch-Mode Battery Charger PDF資料下載
參數資料
| 型號： | SMB135 |
| 廠商： | Summit Microelectronics, Inc. |
| 英文描述： | Programmable, USB/AC, Switch-Mode Battery Charger |
| 中文描述： | 可編程的USB / AC，開關模式電池充電器 |
| 文件頁數： | 1/1頁 |
| 文件大小： | 176K |
| 代理商： | SMB135 |
SMB135
Advanced Information
Programmable, USB/AC, Switch-Mode Battery Charger
SUMMIT
Microelectronics, Inc. 2006
1717 Fox Drive San Jose CA 95131 Phone 408 436-9890 FAX 408 436-9897
http://www.summitmicro.com/
2106 1.3 2/21/2006
1
INTRODUCTION
Programmable USB/AC Li-Ion battery charger
High-efficiency current-mode PWM controller
o
750kHz to 1.25MHz switching frequency
o
0% to 100% duty-cycle
4.35 to 6.0V input voltage range
Small 1.3 x 2.1 uCSP
TM
-15 package (0.4mm pitch)
High-accuracy output voltage regulation: 1%
Low reverse leakage current
Digital programming of all major parameters via I
2
C
interface (with several addresses) and non-volatile
memory
o
Battery voltage set point
o
Pre-charge, fast charge, termination current
o
Fast charge voltage threshold
o
Temperature limits
o
Automatic restart threshold
Status indicator
Stability with ceramic capacitors
Wide range of protection features
o
Thermal monitor
o
Input/output over-voltage lockout
Applications
GSM Handsets
UMTS Handsets
Portable Media Players
Digital camcorders/still cameras
Handheld GPS/PDA’s
SIMPLIFIED APPLICATIONS DRAWING
The SMB135 is a programmable single-cell lithium-ion/lithium-polymer
battery charger for a variety of portable applications. The device
provides a simple and efficient way to charge high-capacity Li-Ion
batteries via a USB port or an AC adapter. Unlike conventional
devices, the SMB135’s high-efficiency operation eliminates large
internal temperature rise and localized hot spot in handheld equipment.
Charge control includes qualification, trickle-charge, pre-charge,
constant current/constant voltage, and termination/safety settings that
are fully programmable via a serial I2C/SMBus making the device truly
a flexible solution. Fast charge current level (one or five unit loads)
can be set via I2C or an input pin (USB500/100). An Enable (EN) pin
is also provided for suspending USB charging and allowing the device
to work in parallel with AC charger, which may already be integrated
into a PMIC device. In this case, the SMB135 does not allow current
to flow back to the USB port.
The SMB135 offers a wide variety of features that protect the battery
pack as well as the charger and input circuitry: over-current,
under/over-voltage and thermal protection. Ultra-precise, 1% accurate,
Kelvin-sensed ADOC technology allows accurate control of battery
float voltage and improves battery capacity utilization. Status can be
monitored via the serial port for charge state and fault conditions. In
addition, one LED driver output can be used to signal charge status.
As a protection mechanism, when the
junction temperature
approaches approximately 145
°
C, the PWM switcher will start to cut
back on the duty cycle, to reduce current.
The SMB135 is available in a space-saving 1.3mm x 2.1mm uCSP
TM
package with lead-free balls and is rated over the -30
°
C to +85
°
C
temperature range.
Figure 1 – Applications block diagram featuring the SMB135 programmable switch-mode battery charger.
FEATURES & APPLICATIONS
USB
Controller
D-
D+
VDC
GND
ADC+ ADC-
IN
GND
STAT
R
LIM
LED
6.8uH
SMB135
SENSEH
SENSEL
50-100m
10uF
Li-Ion
THERM
EN
OUT
USB500/100
SDA
BATT
COMP
C
comp
R
comp
VDDCAP
1uF
4.7uF
SCL
500-700mA
4.35V-6.0V
相關PDF資料 |
PDF描述 |
|---|---|
| SMBH1G75US60 | IGBT Module For Buck(Step Down) Converter(應用于補償轉換器的絕緣柵雙極晶體管(IGBT)模塊) |
| SMD1108 | 8-Channel Auto-Monitor ADC In System Programmable Analog (ISPA) Device |
| SMD1108F | 8-Channel Auto-Monitor ADC In System Programmable Analog (ISPA) Device |
| SMF6529 | 2,000 V - 5,000 V Rectifiers 0.05 A - 0.25 A Forward Current 70 ns Recovery Time |
| SMF6531 | 2,000 V - 5,000 V Rectifiers 0.05 A - 0.25 A Forward Current 70 ns Recovery Time |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SMB135_08 | 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Programmable Switch-mode, USB/AC Input Li Battery Charger with TurboCharge Mode |
| SMB1351B1-3GT30G-50 | 制造商:Amphenol Corporation 功能描述: |
| SMB135NC-470L | 制造商:SUMMIT MICROELECTRONICS 功能描述:BATTERY CHARGER LI-ION PROG 32QFN |
| SMB136 | 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Programmable Switching Li+ Battery Charger with USB/AC Input, CurrentPath? Manager |
| SMB137B | 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Programmable Switching Li+ Battery Charger with USB/AC Input, CurrentPath? Manager |
發布緊急采購，3分鐘左右您將得到回復。