Document
CAT3200HU2
Low Noise Regulated Charge Pump DC-DC Converter
Description
The CAT3200HU2 is a switched capacitor boost converter that delivers a low noise, regulated output voltage. The CAT3200HU2 gives a fixed regulated 5 V output when the FB pin is tied to ground, otherwise it provides 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 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 CAT3200HU2 is available in the tiny 8−pad UDFN 2 mm x 2 mm package.
Features
• Constant High Frequency (2 MHz) Operation • 100 mA Output Current • Regulated Output Voltage (5 V Fixed or Adjustable) • Low Quiescent Current (1.7 mA Typ.) • Soft Start, Slew Rate Control • Reverse Leakage Protection • Thermal Overload Shutdown Protection • Low Value External Capacitors (1 mF) • Foldback Current Overload Protection • Shutdown Current less than 1 mA • 8−pad UDFN 2 mm x 2 mm Package • These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Typical Applications
• 3 V to 5 V Boost Conversion • 2.5 V to 3.3 V Boost Conversion • White LED Driver • Handheld Portable Devices
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UDFN−8 HU2 SUFFIX CASE 517AW
MARKING DIAGRAM
CAX YM
CA = Product Name X = Assembly Location Y = Production Year (Last Digit) M = Production Month (1−9, O, N, D)
PIN CONNECTIONS
CPOS VIN
CNEG PGND
1 (Top View)
VOUT FB SHDN SGND
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 2 of this data sheet.
© Semiconductor Components Industries, LLC, 2014
1
September, 2014 − Rev. 5
Publication Order Number: CAT3200HU2/D
5 V Output
1 mF
VIN 3.3 V
CNEG CPOS
IN
OUT
CAT3200HU2
ON OFF SHDN
FB
SGND PGND
1 mF
VOUT = 5 V
CAT3200HU2
5V VOUT
100 mA
1 mF
Adjustable Output
1 mF
VIN 3.3 V
ON OFF 1 mF
CNEG CPOS
IN
OUT
CAT3200HU2
SHDN
FB
SGND PGND
VOUT
100 mA R1
1 mF R2
ǒ Ǔ VOUT + 1.27 V
1
)
R1 R2
Figure 1. Typical Application Circuits
Table 1. ORDERING INFORMATION
Orderable Part Number
Output Voltage
Package
Lead Finish
Shipping (Note 1)
CAT3200HU2−GT3
5 V and Adjustable
UDFN−8
NiPdAu
3,000
1. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
Table 2. PIN FUNCTION DESCRIPTION
Pin No.
Pin Name
Description
1
CPOS
Positive connection for the flying capacitor
2
VIN
Input power supply
3
CNEG
Negative connection for the flying capacitor
4
PGND
Power ground
5
SGND
Ground reference for all voltages
6
SHDN
Shutdown control logic input (Active LOW)
7
FB
Feedback to set the output voltage
8
VOUT
Regulated output voltage
Tab
Connect to ground on PCB
Table 3. ABSOLUTE MAXIMUM RATINGS
Rating
Value
Unit
VIN, VFB, SHDN, CNEG, CPOS Voltage VOUT VOUT Short Circuit Duration Output Current
−0.6 to +6
V
−0.6 to +7
V
Indefinite
200
mA
ESD Protection (HBM)
2000
V
Junction Temperature Range
150
°C
Storage Temperature Range
−65 to +160
°C
Lead Soldering Temperature (10 sec)
300
°C
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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CAT3200HU2
Table 4. RECOMMENDED OPERATING CONDITIONS
Parameter
Conditions
Symbol Min Typ Max
Unit
Input Voltage
5 V output 3.3 V adjustable output
VIN
2.7
2.2
4.5
V
3.0
V
CIN, COUT, CFLY (Note 2)
1.0
2.2
4.7
mF
Load Current
ILOAD
100
mA
Ambient Temperature Range
TAMB
−40
85
°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. 2. Refer to the Application Information section of this datasheet for more details.
Table 5. ELECTRICAL CHARACTERISTICS (Recommended operating conditions unless otherwise specified. CIN, COUT, CFLY are 1 mF ceramic capacitors and VIN is set to 3.6 V.)
Parameter
Conditions
Symbol Min Typ Max Units
Regulated Output Line Regulation
ILOAD v 40 mA, VIN w 2.7 V, VFB = 0 V
ILOAD v 100 mA, VIN w 3.1 V, VFB = 0 V
3.1 V v VIN v 4.5 V, ILOAD = 50 mA, VFB = 0 V
VOUT
4.8
5.0
5.2
V
VLINE
6
mV
Load Regulation
ILOAD = 10 mA to 100 mA, VIN = 3.6 V, VFB = 0 V
VLOAD
20.