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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MSOP−8
Z SUFFIX
CASE 846AD
1
TSOT−23
TD SUFFIX
CASE 419AF
PIN CONFIGURATIONS
CAT3200
MSOP
1
CPOS
IN
CNEG
PGND
CAT3200−5
SOT23
1
OUT
GND
SHDN
(Top Views)
CPOS
IN
CNEG
OUT
FB
SHDN
SGND
•
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
ORDERING INFORMATION
Device
CAT3200TDI−GT3
CAT3200ZI−GT3
* NiPdAu lead finish
Package
TSOT23−6*
(Pb−Free)
MSOP−8*
(Pb−Free)
Shipping
3,000 / Tape &
Reel
3,000 / Tape &
Reel
Applications
•
•
•
•
•
•
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
©
Semiconductor Components Industries, LLC, 2014
1
April, 2014 − Rev. 16
Publication Order Number:
CAT3200/D
CAT3200, CAT3200−5
MARKING DIAGRAMS
ABRU = CAT3200ZI-GT3
VA = CAT3200TDI-GT3
Y = Production Year (Last Digit)
M = Production Month (1-9, O, N, D)
R = Production Revision
ABRU
YMR
VAYM
Typical Application
1
mF
V
IN
CNEG
IN
CPOS
OUT
5V
V
OUT
V
IN
1
mF
CNEG
IN
CPOS
OUT
R
1
FB
GND
1
mF
R
2
V
OUT
100 mA
CAT3200
+
GND
1
mF
3.3 V
−
ON
1
mF
OFF
SHDN
CAT3200−5
+
3.3 V
−
ON OFF
1
mF
SHDN
100 mA
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 those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
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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
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
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
1.22
−50
10
0.5
0.8
0.4
V
OUT
= 5 V, Shutdown mode (Note 2)
V
OUT
= 0 V
15
80
160
20
30
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
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
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
INPUT VOLTAGE (V)
1.2
2.7
3.0
3.3
3.6
3.9
4.2
4.5
INPUT VOLTAGE (V)
2.0
2.2
1.8
1.6
1.4
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
5.1
20 mA Load
5.0
100 mA Load
4.9
5.0
VIN = 3.2 V
4.9
VIN = 3.0 V
VIN = 2.7 V
0
50
100
150
4.8
2.7
3.0
3.3
3.6
3.9
4.2
4.5
INPUT VOLTAGE (V)
4.8
LOAD CURRENT (mA)
Figure 5. Line Regulation
2.6
OSCILLATOR FREQUENCY (MHz)
100
90
2.4
EFFICIENCY (%)
80
70
60
50
40
30
2.7
3.0
3.3
3.6
3.9
4.2
4.5
1
Figure 6. Load Regulation
VIN = 2.7 V
VIN = 3.2 V
VIN = 3.7 V
2.2
2.0
VIN = 4.5 V
1.8
1.6
INPUT VOLTAGE (V)
10
LOAD CURRENT (mA)
100
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
Figure 10. Load Step Response (3.3 V Input)
CURRENT LIMIT (mA)
200
150
100
50
0
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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