SS6631-5GSTB
| Model | SS6631-5GSTB |
| Description | Switching Regulator/Controller |
| PDF file | Total 13 pages (File size: 464K) |
| Chip Manufacturer | SSC |
SS6631
500mA, Step-Up DC/DC Converter
FEATURES
High Efficiency 90%.
Adjustable Output Voltage with Two Resistors
(SS6631A)
Power-Saving Shutdown Mode (7µA typical).
Internal 2A Switch.
120KHz Switching Rate.
Adjustable Switch Current Limit.
On-Chip Low Battery Detector.
DESCRIPTION
The
SS6631
is a high efficiency step up DC-
DC converter. Only four external components
are required to deliver a fixed voltage of 3V,
3.3V, or 5V. The output voltage can be exter-
nally set to an arbitrary value below breakdown
voltage of the power switch for
SS6631A.
Effi-
ciency beyond 87% can be easily achieved at
100mA load with 2.2V to 3V input voltages.
APPLICATIONS
Palmtop & Notebook Computers.
Pocket Organizers.
Cameras.
Pagers.
Battery Backup Supplies.
Portable Instruments.
Logic-controlled shutdown mode is provided for
power saving. Switch current limit can be pro-
grammed with a resistor. The low battery detec-
tor can be configured as a linear regulator or a
burst mode controller performing an extremely
low supply current operation.
120KHz switching rate reduces the inductor
Pb-free; RoHS-compliant
size. Inductors of 25µH to 50µH inductance are
recommended for most applications.
TYPICAL APPLICATION CIRCUIT
100Ω
+V
IN
L
GS SS12
D1
+V
OUT
(3.3V)
+
C2
100µF
R1
47µH
+
NORMAL
C1
100µF
R
ILIM
ILIM/SD
VIN
SW
GND
VOUT
LBI
LBO
FB
R2
10K
R1
43.5K
SD
LOAD
SS6631A
100Ω
+V
IN
L
GS SS12
D1
+V
OUT
(3.3V)
+
C2
100µF
Note: V
IN
≥1.8V,
V
OUT
≤7V
R1
47µH
+
NORMAL
C1
100µF
R
ILIM
ILIM/SD
VIN
SW
SGND
VOUT
LBI
LBO
CGND
SD
LOAD
SS6631
High Efficiency Step-Up DC/DC Converter
01/17/2008 Rev.1.00
www.SiliconStandard.com
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