G2204 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – 7-Channel DC-DC Converter for DSC

G2204/G2204B
Global Mixed-mode Technology Inc.
G2204C/G2204D
7-Channel DC-DC Converter for DSC
Features
„ 1.5V ~ 5.5V Input Voltage Operation.
„ 95% Efficient DC/DC Converter.
„ Highly Integrated 7-CH DC/DC with integrated
Power MOSFETs.
„ Main Channel Selectable Buck or Boost for
2*AA or Li-Ion Application.
„ Built-in 6 Channel Synchronous Rectified
Current-Mode PWM/PSM Converter, 1 Channel
Non-Synchronous Rectified Current-Mode
PWM Converter.
„ Selectable Boost Type with LED open
protection or Current Regulation Type LED
Driver.
„ 32-steps brightness control for LED Driver
„ Built-in HV LDO and RTC LDO
„ Low Power Consumption ( Sleep Mode ) <
10uA.
„ Built-In Power ON/OFF Sequence for 4 Channel
Synchronous Rectified Converter.
„ Built-In Power ON Sequence for CCD+,CCD-
power.
„ Built-In Short Circuit Protection (SCP) & Under
Voltage Protection (UVP) .
„ Cycle-by-Cycle current limit for DC/DC
Converter
„ Built-In Thermal Shutdown Function.
„ Built-In Battery OVP Function.
„ Built-In Soft-Start Function.
„ Built-In True Shutdown in Boost Converter.
„ Fixed 1.5MHz/750KHz Operating Frequency.
„ TQFN4x4-32 Package.
General Description
The G2204 provide a complete power supply solution
for digital cameras. They improve performance,
component count, and size compared to other
multi-channel controllers in 2-cell AA, 1-cell Li-Ion,
and multi-battery designs. On-chip MOSFETs
provide up to 92~95% efficiency for critical power
supplies. All channels DC/DC operate at one fixed
frequency of 1.5MHz/750KHz to optimize size, cost,
and efficiency. All Synchronous converters operate
at pulse skipping mode at light load. They also feature
True-Shutdown as well as internal compensation to
minimize external component count.
Applications
DSC Power Supply
Ordering Information
ORDER
NUMBER
MARKING
TEMP.
RANGE
PACKAGE
(Green)
G2204K11U
2204
-20°C to +85°C TQFN4X4-32
G2204BK11U 2204B -20°C to +85°C TQFN4X4-32
G2204CK11U 2204C -20°C to +85°C TQFN4X4-32
G2204DK11U 2204D -20°C to +85°C
G2204: CH1-CH2-CH4-CH3-SDOK,
G2204B:CH1-CH4-CH3-CH2-SDOK,
G2204C:CH1-CH4-CH2-SDOK-CH3,
G2204D:CH1-CH4-CH2-CH3-SDOK
Note: K1: TQFN4X4-32
1: Bonding Code
U: Tape & Reel
TQFN4X4-32
Pin Configurations
G2204/G2204B/G2204C/G2204D
FBZ 1
ONLED 2
ISET 3
VOLED 4
LXLED 5
LXBST 6
VOBST 7
FBBST 8
Thermal
Pad
24 FBSD
23 ONSU
22 VBG
21 VSU
20 RTCOUT
19 FBINV
18 VOINV
17 BATT
TQFN4X4-32
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
G2204/G2204B
G2204C/G2204D
SU
Synchronous Rectified
Current Mode Step-Up
MAIN
Current Mode
Selectable Step-Up/Step-
Down
SD
Synchronous Rectified
Current Mode Step-Down
DDRZ
Synchronous Rectified
Current Mode Step-Down
CCD INV
Current Mode Inverting
CCD BST
Synchronous Rectified
Current Mode Step-Up
LED Driver
Boost or current Regulator
HV LDO/RTC LDO
Ver: 0.1
May 26, 2011
TEL: [phone]
http://www.gmt.com.tw
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