CAV4201TD-GT3 ON Semiconductor, CAV4201TD-GT3 Datasheet

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CAV4201TD-GT3

Manufacturer Part Number
CAV4201TD-GT3
Description
LED Lighting Drivers LED DR, BUCK, 7 LED
Manufacturer
ON Semiconductor
Datasheet

Specifications of CAV4201TD-GT3

Product Category
LED Lighting Drivers

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Part Number:
CAV4201TD-GT3
Manufacturer:
ON Semiconductor
Quantity:
2 050
CAV4201
350 mA High Efficiency
Step Down LED Driver
Description
to drive high current LEDs. A patented switching control algorithm
allows highly efficient and accurate LED current regulation. A single
RSET resistor sets the full scale LED string current up to 350 mA from
supplies as high as 36 V.
internal power dissipation allowing the device to be housed in a tiny
package without the need for dedicated heat sinking. The device is
compatible with switching frequencies of up to 1 MHz, making it ideal for
applications requiring small footprint and low value external inductors.
single input pin, CTRL. Additional features include overload current
protection and thermal shutdown. The device is available in the low
profile 5−lead thin SOT23 package and is ideal for space constrained
applications.
Features
Applications
© Semiconductor Components Industries, LLC, 2011
November, 2011 − Rev. 1
The CAV4201 is a high efficiency step−down converter optimized
The switching architecture of the CAV4201 results in extremely low
Enable, analog dimming and LED shutdown control is provided via a
and Change Control
Compliant
LED Drive Current up to 350 mA
Compatible with 12 V and 24 V Standard Systems
Handles Transients up to 40 V
Single Pin Control and Dimming Function
Power Efficiency up to 94%
Drives LED Strings of up to 32 V
Open and Short LED Protection
Parallel Configuration for Higher Output Current
CAV Prefix for Automotive and Other Applications requiring Site
TSOT−23 5−lead Package
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
12 V and 24 V Lighting Systems
Automotive and Aircraft Lighting
General Lighting
High Brightness 350 mA LEDs
D: ON Semiconductor MBR0540
L: Sumida CDRH6D26−220
See Table 4 and Table 5 for external component selection.
Figure 1. Typical Application Circuit
VBAT
Analog Dimming
9 V
4.7 mF
Enable /
R1
1
C1
VBAT
CTRL
RSET
CAV4201
* Plated Finish: NiPdAu
CAV4201TD−GT3
GND
Device
SW
TF = Device Code
Y = Production Year (Last Digit)
M = Production Month: 1−9, A, B, C
ORDERING INFORMATION
CTRL
RSET
GND
MARKING DIAGRAMS
PIN CONNECTIONS
http://onsemi.com
D
CASE 419AE
1
5
TD SUFFIX
(Top View)
TSOT−23
22 mH
(Pb−Free)
TFYM
TSOT−23
Package
L
Publication Order Number:
1
10 mF
C2
VBAT
SW
Tape & Reel
Shipping
CAV4201/D
3,000/
350 mA

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CAV4201TD-GT3 Summary of contents

Page 1

... General Lighting • High Brightness 350 mA LEDs D: ON Semiconductor MBR0540 L: Sumida CDRH6D26−220 See Table 4 and Table 5 for external component selection. © Semiconductor Components Industries, LLC, 2011 November, 2011 − Rev. 1 CAV4201TD−GT3 * Plated Finish: NiPdAu VBAT 4.7 mF VBAT CAV4201 ...

Page 2

Table 1. ABSOLUTE MAXIMUM RATINGS Parameters VBAT, SW, CTRL RSET Switch SW peak current Storage Temperature Range Junction Temperature Range Lead Temperature Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the ...

Page 3

TYPICAL OPERATION CHARACTERISTICS ( 300 mA mH LED 1.0 0.8 0.6 0.4 0 INPUT VOLTAGE (V) Figure 2. Input Operating Supply Current 250 ...

Page 4

TYPICAL OPERATION CHARACTERISTICS ( 300 mA mH LED 500 150 mA 400 300 300 mA 200 100 INPUT VOLTAGE (V) Figure 8. Switching Frequency vs. ...

Page 5

TYPICAL OPERATION CHARACTERISTICS ( 300 mA mH LED 100 95 2 LEDs LED 100 150 200 250 LED CURRENT (mA) Figure 14. Efficiency vs. ...

Page 6

TYPICAL OPERATION CHARACTERISTICS ( 300 mA mH LED Figure 20. RSET Transient Response External Component Selection Table 4 provides the recommended external components L and C2 that offer the best ...

Page 7

Table 6. PIN DESCRIPTION Pin Name 1 CTRL Enable and analog dimming control input pin. 2 GND Ground reference. 3 RSET RSET pin. A resistor connected between the pin and ground sets the average LED current Interface to ...

Page 8

Simplified Block Diagram 12 V/ CTRL Reference – Basic Operation The CAV4201 is a high efficiency step−down regulator designed to drive series connected high−power LEDs. LED strings with total forward voltages of ...

Page 9

... LED current. The voltage rating of the diode should be greater than the peak supply voltage transient preventing any breakdown or leakage. 150 mA ON Semiconductor Schottky diode MBR0540 (40 V, 500 mA rated) is recommended. Schottky diodes rated at 400 mA (or higher) continuous current are fine for most applications. ...

Page 10

DUTY CYCLE [%] Figure 25. LED Current vs. Duty Cycle VBAT 4 VBAT CAV4201 RSET CTRL SW GND PWM control R4 ...

Page 11

R5 VIN 4.7 μF VBAT CAV4201 RSET R1 8.3 kΩ CTRL SW GND C2 U2 4.7 μF VBAT CAV4201 RSET R2 8.3 kΩ CTRL SW GND C3 U3 4.7 μF VBAT CAV4201 RSET R3 8.3 kΩ ...

Page 12

... Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303− ...

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