G2105A Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – 7-Channel DC-DC Converter for DSC

Global Mixed-mode Technology
G2105
7-Channel DC-DC Converter for DSC
Features
„ 95% Efficient DC/DC Converter.
„ Highly Integrated 7-CH DC/DC with integrated
Power MOSFETs.
„ 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).
„ 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.
„ All Channel with internal compensation
„ All Power Switches integrated
„ Built-in RTC LDO.
„ Build-in thermal shutdown (TSD, 150°C ).
General Description
The G2105 provide a complete power supply solution
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.
The G2105 is available in 32-pin TQFN (4X4) package.
Ordering Information
ORDER
NUMBER
MARKING
TEMP.
RANGE
G2105AK11U 2105A -20°C to +85°C
G2105BK11U 2105B
Note: K1: TQFN4X4-32
1: Bonding Code
U: Tape & Reel
-20°C to +85°C
PACKAGE
(Green)
TQFN4X4-32
TQFN4X4-32
Applications
„ DSC Power Supply
Pin Configuration
CTL7 1
CTL5 2
FB5 3
PVCC5 4
LX5 5
VOUT5 6
FB6 7
CTL6 8
Thermal
Pad
24 FB1
23 FB3
CTL7 1
CTL5 2
22 V08
FB5 3
21 VCC PVCC5 4
20 BAT
LX5 5
19 FB2
VOUT5 6
18 POK
17 VOUT2
FB6 7
CTL6 8
Thermal
Pad
24 FB1
23 FB3
22 V08
21 MODE
20 BAT
19 FB2
18 RTCLDO_P
17 RTCLDO_O
G2105A TQFN4X4-32
G2105B TQFN4X4-32
Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
G2105
CH1
Synchronous Rectified
Current Mode Step-Up
CH2
Synchronous Rectified
Current Mode Step-Up(G2105A)/
Step-Down(G2105B)
CH3
Synchronous Rectified
Current Mode Step-Down
CH4
Synchronous Rectified
Current Mode Step-Down
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
Ver: 0.2
Jan 17, 2013
TEL: [phone]
http://www.gmt.com.tw
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