G2204/B/C/D

G2204/G2204B
G2204C/G2204D
Global Mixed-mode Technology Inc.
7-Channel DC-DC Converter for DSC
Features
„
„
„
„
„
„
„
„
„
„
„
„
„
„
„
„
„
„
„
General Description
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+,CCDpower.
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.
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 TQFN4X4-32
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
Pin Configurations
LXSD
PVSD
G2204/G2204B
G2204C/G2204D
SU
Synchronous Rectified
Current Mode Step-Up
25
26
FBSU
PVSU
28
27
SDOK
LXSU
29
30
LXZ
32
31
PVZ
G2204/G2204B/G2204C/G2204D
FBZ
1
24
FBSD
ONLED
2
23
ONSU
ISET
3
22
VBG
VOLED
4
21
VSU
LXLED
5
20
RTCOUT
LXBST
6
19
FBINV
Thermal
Pad
DDRZ
Synchronous Rectified
Current Mode Step-Down
CCD INV
Current Mode Inverting
16
15
SD
Synchronous Rectified
Current Mode Step-Down
CCD BST
Synchronous Rectified
Current Mode Step-Up
LXINV
CCDSEQ
FBM
PVM
LXM
PVM U/D
10
FBLDO
LDOOUT
13
BATT
14
VOINV
17
11
18
8
12
7
FBBST
9
VOBST
MAIN
Current Mode
Selectable Step-Up/StepDown
LED Driver
Boost or current Regulator
TQFN4X4-32
HV LDO/RTC LDO
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
Ver: 0.1
May 26, 2011
TEL: 886-3-5788833
http://www.gmt.com.tw
1