G2105A [GMT]
7-Channel DC-DC Converter for DSC;
| 型号： | G2105A |
| 厂家： | 
GLOBAL MIXED-MODE TECHNOLOGY INC |
| 描述： | 7-Channel DC-DC Converter for DSC |
| 文件： | 总1页 (文件大小：82K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
G2105
Global Mixed-mode Technology
7-Channel DC-DC Converter for DSC
Features
General Description
95% Efficient DC/DC Converter.
The G2105 provide a complete power supply solution
Highly Integrated 7-CH DC/DC with integrated
Power MOSFETs.
for digital cameras. They improve performance, com-
ponent count, and size compared to other
multi-channel controllers in 2-cell AA(G2105A), 1-cell
Li-Ion(G2105B), and multi-battery designs. On-chip
MOSFETs provide up to 92~95% efficiency for critical
power supplies. All channels DC/DC operate at Fixed
2MHz(CH1~CH4)/ 1MHz(CH5~CH7) Operating Fre-
quency to optimize size, cost, and efficiency.
CH1, CH2, CH6 and CH7 Boost-type Synchro-
nous Rectified Current-Mode PWM Converters
with true-shutdown function.
CH2 Buck(G2105B) or Boost(G2105A) for all Bat-
tery Application.
6 Channel Built-in Synchronous Rectified Cur-
rent-Mode PWM Converters, 1 Channel Built-in
Non-Synchronous Rectified Current-Mode PWM
Converters.
Low Power Consumption (Sleep Mode) <10µA.
Built-In Short-circuit Protection (SCP) and Over
Current Protection (OCP) for MOSFETs.
Built-In Under Voltage Lock Out (UVLO) and Over
Load Protection (OLP).
The G2105 is available in 32-pin TQFN (4X4) package.
Ordering Information
Built-In Soft-Start Function.
Selectable CH7 Boost Type with Open LED Pro-
tection or Current Regulation Type LED Driver.
Built-In Power ON/OFF Sequence Control.
Fixed 2MHz(CH1~CH4) / 1MHz(CH5~CH7) Oper-
ating Frequency.
ORDER
NUMBER
TEMP.
RANGE
PACKAGE
(Green)
MARKING
G2105AK11U
G2105BK11U
2105A
2105B
-20°C to +85°C TQFN4X4-32
-20°C to +85°C TQFN4X4-32
All Channel with internal compensation
All Power Switches integrated
Built-in RTC LDO.
Note: K1: TQFN4X4-32
1: Bonding Code
U: Tape & Reel
Build-in thermal shutdown (TSD, 150°C ).
Applications
DSC Power Supply
Pin Configuration
G2105
CH1
Synchronous Rectified
Current Mode Step-Up
1
2
3
4
5
1
2
3
4
5
CTL7
CTL5
FB5
24
23
22
21
20
CTL7
CTL5
FB5
24
23
22
FB1
FB3
V08
VCC
BAT
FB1
CH2
Synchronous Rectified
Current Mode Step-Up(G2105A)/
Step-Down(G2105B)
FB3
V08
CH3
21
PVCC5
LX5
PVCC5
LX5
MODE
BAT
Thermal
Pad
Thermal
Pad
Synchronous Rectified
Current Mode Step-Down
20
CH4
19
18
17
19
18
17
6
7
8
6
7
8
FB2
FB2
VOUT5
FB6
VOUT5
FB6
Synchronous Rectified
Current Mode Step-Down
POK
RTCLDO_P
RTCLDO_O
VOUT2
CTL6
CTL6
CH5 (CCD INV)
Current Mode Inverting
CH6 (CCD BST)
Synchronous Rectified
Current Mode Step-Up
CH7 (LED Driver)
Synchronous Rectified
Current Mode Step-Up or Current
Regulator Type LED Driver
G2105B TQFN4X4-32
G2105A TQFN4X4-32
Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.2
Jan 17, 2013
1
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