Datasheet

ManualsBrandsTaiwan Semiconductor ManualsDC / DC Adjustable Switching RegulatorsSwitching Voltage Regulator TO-263 3A

TS2596

Taiwan Semiconductor

1 Version: G1608

3A / 150kHz Step-Down DC-DC Converter

GENERAL DESCRIPTION

The TS2596 Series are step-down switching regulators

with all required active functions. It is capable of driving

3A load with excellent line and load regulations. These

devices are available in fixed output voltages of 3.3V, 5V,

and an adjustable output version.

The TS2596 series operates at a switching frequency of

150kHz thus allowing smaller sized filter components than

what would be needed with lower frequency switching

regulators. It substantially not only reduces the area of

board size but also the size of heat sink, and in some

cases no heat sink is required. The ±4% tolerance on

output voltage within specified input voltages and output

load conditions is guaranteed. Also, the oscillator

frequency accuracy is within ±10%. External shutdown is

included. Featuring 100μA (typical) standby current. The

output switch includes cycle-by-cycle current limiting, as

well as thermal shutdown for full protection under fault

conditions.

FEATURES

● Output voltage: 3.3V, 5V & adjustable version

● Adjustable output voltage range 1.23V~38.5V

● 150kHz fixed switching frequency

● Voltage mode Non-synchronous PWM control

● Thermal shutdown and current limit protection

● ON/OFF shutdown control input

● Short circuit protect (SCP)

● Operating voltage can be up to 40V

● Output load current 3A

● Low power standby mode

● Built-in switching transistor on chip

● Compliant to RoHS Directive 2011/65/EU and in

accordance to WEEE 2002/96/EC.

● Halogen-free according to IEC 61249-2-21

APPLICATION

● Simple High-efficiency Step down Regulator

● On-Card Switching Regulators

● Positive to Negative Converter

TO-263-5L (D

PAK)

Definition

1. Input

2. SW Output

3. Ground

4. Feedback

5. Enable

Notes: Moisture sensitivity level: level 3. Per J-STD-020

TYPICAL APPLICATIN CIRCUIT

Adjustable Output Voltage Version

OUT

= V

(1 +

), V

= 1.23V, R2 = 0.7k ~ 3k

Summary of content (8 pages)

PAGE 1
TS2596 Taiwan Semiconductor 3A / 150kHz Step-Down DC-DC Converter GENERAL DESCRIPTION FEATURES The TS2596 Series are step-down switching regulators ● Output voltage: 3.3V, 5V & adjustable version with all required active functions. It is capable of driving ● Adjustable output voltage range 1.23V~38.5V 3A load with excellent line and load regulations. These ● 150kHz fixed switching frequency devices are available in fixed output voltages of 3.
PAGE 2
TS2596 Taiwan Semiconductor ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL LIMIT UNIT Maximum Supply Voltage VCC +45 V Recommend Operating Supply Voltage VOP +4.5 to +40 V VSW , VEN -0.3 to +40 V Feedback Pin Voltage VFB -0.
PAGE 3
TS2596 Taiwan Semiconductor ELECTRICAL CHARACTERISTICS (VIN = 12V for 3.3V, 5V, Adjustable Version, ILOAD = 0.3A, TA = 25°C unless otherwise noted) PARAMETER CONDITION ON/OFF Pin Logic Input Current SYMBOL MIN TYP MAX VLOGIC =2.5V (OFF) IH -- 5 15 VLOGIC =0.5V (ON) IL -- 0.
PAGE 4
TS2596 Taiwan Semiconductor PIN FUNCTION DESCRIPTION VCC This is the positive input supply for the IC switching regulator. A suitable input bypass capacitor must be presented at this pin to minimize voltage transients and to supply the switching currents needed by the regulator. Ground Circuit ground SW Output Internal switch. The voltage at this pin switches between (+VCC – VSAT) and approximately – 0.5V, with a duty cycle of approximately VOUT / VCC.
PAGE 5
TS2596 Taiwan Semiconductor TYPICAL APPLICATIN CIRCUIT Adjustable Output Voltage Version VOUT = VFB × (1 + R1 ), VFB = 1.23V, R2 = 0.7k ~ 3k R2 VOUT R2 R1 5.0V 1.5kΩ 4.7kΩ 3.3V 1.5kΩ 2.5kΩ 2.5V 1.5kΩ 1.5kΩ Fixed Output Voltage Version L1 recommend value (IOUT=3A,) VOUT 2.5V 3.
PAGE 6
TS2596 Taiwan Semiconductor ELECTRICAL CHARACTERISTICS CURVES (TC = 25°C unless otherwise noted) Figure 1. Output Ripple Figure 2. Power On Test Wave (VIN=12V, VOUT=5V, IO=3A) (VIN=12V, VOUT=5V, IO=3A) Figure 3. Load Transient Response Figure 4. EN On Test Wave (VIN=12V, VOUT=5V, IO=0.2~3A) (VIN=12V, VOUT=5V, IO=3A) Figure 5. Efficiency Figure 6.
PAGE 7
TS2596 Taiwan Semiconductor PACKAGE OUTLINE DIMENSIONS (Unit: Millimeters) 2 TO-263-5L (D PAK) SUGGESTED PAD LAYOUT (Unit: Millimeters) MARKING DIAGRAM Y M = Year Code = Month Code for Halogen Free Product O =Jan P =Feb Q =Mar R =Apr S =May T =Jun U =Jul V =Aug W =Sep X =Oct Y =Nov Z =Dec L = Lot Code XX = Voltage Code (3.3=3.3V, 5.
PAGE 8
TS2596 Taiwan Semiconductor Notice Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, to any intellectual property rights is granted by this document.