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CAT3200ZI-GT3 Datasheet(PDF) 1 Page - Catalyst Semiconductor

No. de pieza CAT3200ZI-GT3
Descripción Electrónicos  Low Noise Regulated Charge Pump DC-DC Converter
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Fabricante Electrónico  CATALYST [Catalyst Semiconductor]
Página de inicio  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT3200ZI-GT3 Datasheet(HTML) 1 Page - Catalyst Semiconductor

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© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. MD-5002, Rev. L
CAT3200, CAT3200-5
Low Noise Regulated Charge Pump DC-DC Converter
DESCRIPTION
The CAT3200 and CAT3200-5 are switched capacitor
boost converters that deliver a low noise, regulated
output voltage. The CAT3200-5 gives a fixed regulated
5V output. The CAT3200 has an adjustable output
using external resistors. The constant frequency 2MHz
charge pump allows small 1
µF ceramic capacitors to
be used.
Maximum output loads of up to 100mA can be
supported over a wide range of input supply voltages
(2.7V to 4.5V) making the device ideal for battery-
powered applications.
FEATURES
s Constant high frequency (2MHz) operation
s 100mA output current
s Regulated output voltage (5V fixed CAT3200-5,
Adjustable CAT3200)
s Low quiescent current (1.7mA typ.)
s Input voltage operation down to 2.7V
s Soft start, slew rate control
s Thermal overload shutdown protection
s Low value external capacitors (1
µF)
s Foldback current overload protection
s Shutdown current less than 1
µA
s CAT3200-5 in low profile (1mm thin) 6-lead
SOT23 package
s CAT3200 in MSOP-8 package
APPLICATIONS
s 3V to 5V boost conversion
s White LED driver
s USB On-The-Go 5V supply
A shutdown control input allows the device to be
placed in power-down mode, reducing the supply
current to less than 1
µA.
In the event of short circuit or overload conditions, the
device is fully protected by both foldback current
limiting and thermal overload detection. In addition, a
soft start, slew rate control circuit limits inrush current
during power-up.
The CAT3200-5 is available in a 6-lead, 1mm max
thin SOT23 package. The CAT3200 is available in an
8-lead MSOP package.
s Local 5V supply from lower rail
s Battery backup systems
s Handheld portable devices
TYPICAL APPLICATION
CAT3200-5
CNEG
CPOS
IN
OUT
ON OFF
SHDN
GND
+
-
5V Output
3.3V
CAT3200
CNEG
CPOS
IN
OUT
ON OFF
SHDN
GND
+
-
3.3V
VIN
5V
100mA
VOUT
Adjustable Output
VIN
FB
R1
R2
100mA
VOUT
VOUT = 1.27 V 1+
( R1
R2


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