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 5 V output. The CAT3200 has
an adjustable output using external resistors. The constant
frequency 2 MHz charge pump allows small 1
mF
ceramic capacitors
to be used.
Maximum output loads of up to 100 mA can be supported over a
wide range of input supply voltages (2.7 V to 4.5 V) making the device
ideal for battery−powered applications.
A shutdown control input allows the device to be placed in
power−down mode, reducing the supply current to less than 1
mA.
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, 1 mm max thin SOT23
package. The CAT3200 is available in an 8−lead MSOP package.
Features
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1
MSOP−8
Z SUFFIX
CASE 846AD
1
TSOT−23
TD SUFFIX
CASE 419AF
PIN CONFIGURATIONS
CAT3200
MSOP
CPOS
IN
CNEG
PGND
1
OUT
FB
SHDN
SGND
CAT3200−5
SOT23
1
OUT
GND
SHDN
(Top Views)
CPOS
IN
CNEG
•
Constant High Frequency (2 MHz) Operation
•
100 mA Output Current
•
Regulated Output Voltage (5 V Fixed CAT3200−5, Adjustable
•
•
•
•
•
•
•
•
•
•
CAT3200)
Low Quiescent Current (1.7 mA Typ.)
Input Voltage Operation down to 2.7 V
Soft Start, Slew Rate Control
Thermal Overload Shutdown Protection
Low Value External Capacitors (1
mF)
Foldback Current Overload Protection
Shutdown Current less than 1
mA
CAT3200−5 in Low Profile (1 mm Thin) 6−lead TSOT−23 Package
CAT3200 in MSOP−8 Package
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
3 V to 5 V Boost Conversion
White LED Driver
USB On−The−Go 5 V Supply
Local 5 V Supply from Lower Rail
Battery Backup Systems
Handheld Portable Devices
ORDERING INFORMATION
Device
CAT3200TDI−T3
CAT3200TDI−GT3
CAT3200ZI−T3
CAT3200ZI−GT3
* NiPdAu lead finish
Package
TSOT23−6
(Pb−Free)
TSOT23−6*
(Pb−Free)
MSOP−8
(Pb−Free)
MSOP−8*
(Pb−Free)
Shipping
3,000 / Tape &
Reel
3,000 / Tape &
Reel
3,000 / Tape &
Reel
3,000 / Tape &
Reel
Applications
•
•
•
•
•
•
©
Semiconductor Components Industries, LLC, 2011
September, 2011
−
Rev. 14
1
Publication Order Number:
CAT3200/D
CAT3200, CAT3200−5
MARKING DIAGRAMS
ABME = CAT3200ZI-T3
ABRU = CAT3200ZI-GT3
LN = CAT3200TDI-T3
VA = CAT3200TDI-GT3
Y = Production Year (Last Digit)
M = Production Month (1-9, A, B, C)
R = Production Revision
ABME
YMR
ABRU
YMR
LNYM
VAYM
Typical Application
1
mF
V
IN
ON OFF
1
mF
CNEG
IN
CPOS
OUT
5V
V
OUT
V
IN
1
mF
CNEG
IN
OFF
CPOS
OUT
R
1
FB
GND
1
mF
R
2
V
OUT
100 mA
CAT3200−5
+
3.3 V
−
SHDN
GND
100 mA
+
1
mF
3.3 V
−
ON
1
mF
CAT3200
SHDN
V
OUT
= 5 V
I
OUT
≤
50 mA, for V
IN
≥
2.8 V
I
OUT
≤
90 mA, for V
IN
≥
3 V
V
OUT
+
1.27 V
R
1
)
1
R
2
Figure 1. Typical Application
−
5 V Output
Table 1. PIN DESCRIPTIONS
Designation
OUT
GND
SHDN
CNEG
IN
CPOS
FB
PGND
SGND
Regulated output voltage.
Ground reference for all voltages.
Figure 2. Typical Application
−
Adjustable Output
Description
Shutdown control logic input (Active LOW)
Negative connection for the flying capacitor.
Input power supply.
Positive connection for the flying capacitor.
Feedback to set the output voltage.
Power ground.
Signal ground.
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameters
V
IN
, V
OUT
, SHDN, C
NEG
, C
POS
Voltage
V
OUT
Short Circuit Duration
Output Current
ESD Protection (HBM)
Junction Temperature
Storage Temperature Range
Lead Soldering Temperature (10 sec)
Power Dissipation (SOT23−6)
Power Dissipation (8−MSOP)
Ratings
−0.6
to +6.0
Indefinite
200
2000
150
−65
to +160
300
0.3
0.5
mA
V
°C
°C
°C
W
W
Units
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
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CAT3200, CAT3200−5
Table 3. RECOMMENDED OPERATING CONDITIONS
Parameters
V
IN
C
IN
, C
OUT
, C
FLY
I
LOAD
Ambient Temperature Range
Ratings
2.7 to 4.5
1
0 to 100
−40
to +85
Units
V
mF
mA
°C
Table 4. ELECTRICAL SPECIFICATIONS
Symbol
V
OUT
V
LINE
V
LOAD
F
OSC
V
R
h
I
GND
I
SHDN
V
FB
I
FB
R
OL
T
ON
V
IHSHDN
V
ILSHDN
I
ROUT
I
SC
T
SD
T
HYST
Parameter
Regulated Output
Line Regulation
Load Regulation
Switching Frequency
Output Ripple Voltage
Efficiency
Ground Current
Shutdown Input Current
FB Voltage
FB Input Current
Open−Loop Resistance
(Recommended operating conditions unless otherwise specified. C
IN
, C
OUT
, C
FLY
are 1
mF
ceramic capacitors and V
IN
is set to 3.6 V.)
Conditions
I
LOAD
≤
40 mA, V
IN
≥
2.7 V
I
LOAD
≤
100 mA, V
IN
≥
3.1 V
3.1 V
≤
V
IN
≤
4.5 V, I
LOAD
= 50 mA
I
LOAD
= 10 mA to 100 mA, V
IN
= 3.6 V
1.3
I
LOAD
= 100 mA
CAT3200−5 Only
I
LOAD
= 50 mA, V
IN
= 3 V, CAT3200−5
I
LOAD
= 0 mA, SHDN = V
IN
I
LOAD
= 0 mA, SHDN = 0 V
CAT3200 Only
CAT3200 Only
I
LOAD
= 100 mA, V
IN
= 3 V (Note 1)
I
LOAD
= 0 mA, V
IN
= 3 V
0.4
V
OUT
= 5 V, Shutdown mode (Note 2)
V
OUT
= 0 V
15
80
160
20
30
1.22
−50
10
0.5
0.8
1.3
1.27
Min
4.8
Typ
5.0
6
20
2.0
30
80
1.6
4
1
1.32
50
2.6
Max
5.2
Units
V
mV
mV
MHz
mVp−p
%
mA
mA
V
nA
W
ms
V
V
mA
mA
°C
°C
V
OUT
Turn−on time (10% to 90%)
High Detect Shutdown Threshold
Low Detect Shutdown Threshold
Reverse Leakage into OUT pin
Short−circuit Output
Thermal Shutdown
Thermal Hysteresis
1. R
OL
= (2V
IN
−
V
OUT
)/I
OUT
2. In the event of a controlled shutdown, the output will be isolated from the input, but will remain connected to the internal resistor feedback
network. This will cause a small level of reverse current to flow back into the device to ground.
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CAT3200, CAT3200−5
TYPICAL PERFORMANCE CHARACTERISTICS (CAT3200−5)
(T
AMB
= 25°C, C
IN
= C
OUT
= C
FLY
= 1
mF,
V
IN
= 3.3 V unless specified otherwise.)
1.2
SHUTDOWN THRESHOLD (V)
1.1
GROUND CURRENT (mA)
2.7
3.0
3.3
3.6
3.9
4.2
4.5
1.0
0.9
0.8
0.7
0.6
0.5
0.4
1.2
2.7
3.0
3.3
3.6
3.9
4.2
4.5
2.0
1.8
1.6
1.4
2.2
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Figure 3. Shutdown Input Threshold vs.
Supply Voltage
5.2
5.2
Figure 4. Ground Current vs. Supply Voltage
(No Load)
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
5.1
20 mA Load
100 mA Load
4.9
5.1
5.0
5.0
VIN = 3.2 V
4.9
VIN = 2.7 V
0
50
VIN = 3.0 V
4.8
2.7
3.0
3.3
3.6
3.9
4.2
4.5
4.8
100
150
INPUT VOLTAGE (V)
LOAD CURRENT (mA)
Figure 5. Line Regulation
2.6
OSCILLATOR FREQUENCY (MHz)
2.4
2.2
2.0
1.8
1.6
EFFICIENCY (%)
100
90
80
70
60
50
40
2.7
3.0
3.3
3.6
3.9
4.2
4.5
30
1
Figure 6. Load Regulation
VIN = 2.7 V
VIN = 3.2 V
VIN = 3.7 V
VIN = 4.5 V
10
LOAD CURRENT (mA)
100
INPUT VOLTAGE (V)
Figure 7. Oscillator Frequency vs. Supply
Voltage
Figure 8. Efficiency vs. Load Current
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CAT3200, CAT3200−5
TYPICAL PERFORMANCE CHARACTERISTICS (CAT3200−5)
(T
AMB
= 25°C, C
IN
= C
OUT
= C
FLY
= 1
mF,
V
IN
= 3.3 V unless specified otherwise.)
Figure 9. Soft Start Power Up
(90 mA Load, 3.3 V Input)
250
200
150
100
50
0
Figure 10. Load Step Response (3.3 V Input)
CURRENT LIMIT (mA)
2.7
3.0
3.3
3.6
3.9
4.2
4.5
INPUT VOLTAGE (V)
Figure 11. Output Ripple
(100 mA Load, 3.3 V Input)
2
OUTPUT VOLTAGE CHANGE (%)
FREQUENCY CHANGE (%)
4
Figure 12. Short Circuit Current vs. Supply
Voltage
1
10 mA Load
0
2
0
−1
−2
−2
−40
−20
0
20
40
60
80
100
−4
−40
−20
0
20
40
60
80
100
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 13. Output Voltage Change vs.
Temperature
Figure 14. Oscillator Frequency Change vs.
Temperature
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