TS2596CM505 [TSC]

3A Step Down Switching Voltage Regulator; 3A降压开关稳压器


型号：	TS2596CM505
厂家：	TAIWAN SEMICONDUCTOR COMPANY, LTD
描述：	3A Step Down Switching Voltage Regulator 3A降压开关稳压器稳压器开关
文件：	总6页 (文件大小：132K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TS2596

Preliminary

3A Step Down Switching Voltage Regulator

Pin assignment:

1. Input

150KHz Oscillating Frequency

2. Output

Output Current up to 3A

3. Ground

Enable Input Control

4. Feedback

5. Enable

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 70µA (typical) standby current. The output switch includes cycle-by-cycle current

limiting, as well as thermal shutdown for full protection under fault conditions.

This series are offered in 5-pin TO-263, TO-220 package.

Features

Ordering Information

Guaranteed 3A output current

Operating Temp.

Part No.

Package

TO-220-5L

TO-263-5L

3.3V, 5V, and adjustable versions

(Ambient)

Wide input voltage range, up to 40V

TS2596CZ5xx

TS2596CZ5

Internal oscillator of 150KHz fixed frequency

Wide adjust version output voltage range, from 1.23V

to 25V ±4% max. at over line and load conditions.

Low standby current, typ. 70µA, at shutdown mode

Requires only 4 external components

-20 ~ +85 ^oC

TS2596CM5xx

TS2596CM5

Note: Where xx denotes voltage option, available are

5V and 3.3V. Leave blank for adjustable

version. Contact factory for additional voltage

options.

Thermal shutdown and current limit protection

P+ product enhancement tested

Applications

LCD Monitors

ADD-ON Cards Switching Regulators

High Efficiency Step-Down Regulators

Efficient Pre-regulator for Linear Regulator

Absolute Maximum Rating

Input Voltage

Vin

+40

-0.3V ≤ V ≤ Vin

Internal Limited

-40 ~ +125

-65 ~ +150

ENABLE Pin Input Voltage

Power Dissipation

Vin (operate)

P_D

T_J

^oC

Operating Junction Temperature Range

Storage Temperature Range

Lead Soldering Temperature (260 ^oC)

T_STG

TS2596

1-6

2003/12 rev. D

Thermal Performance

Condition

Symbol

Θja

Limits

Unit

^oC/W

Thermal Resistance Junction to Ambient

Thermal Resistance Junction to Case

Θjc

Recommended Operating Conditions (Ta = 25 ^oC)

Condition

Symbol

Vin

Limits

4.5 ~ 28

0 ~ +20

Unit

Input Voltage

ENABLE Pin Input Voltage

Vin (operate)

Block Diagram

Electrical Characteristics

Vin = 12V, I_L= 500mA, Ta = 25 ^oC unless otherwise specified.

Parameter

TS2596-3.3V

Conditions

Min

Typ

Max

Unit

0.2A ≤ I_L≤ 3A, 5.07V ≤ Vin ≤ 40V

(Figure 1)

Output Voltage (Note 1)

0.96|Vo|

3.3

1.04|Vo|

Efficiency

Vin=12V, I_L=3A

TS2596-5V

0.2A ≤ I_L≤ 3A, 8V ≤ Vin ≤ 40V

(Figure 1)

Output Voltage (Note 1)

Efficiency

0.96|Vo|

5.0

1.04|Vo|

Vin=12V, I_L=3A

TS2596

2-6

2003/12 rev. D

Electrical Characteristics (Continued)

Vin = 12V, I_L= 500mA, Ta = 25 ^oC unless otherwise specified.

TS2596 Adjustable

0.2A ≤ I_L≤ 3A, 8V ≤ Vin ≤ 40V,

Feedback Voltage (Note 1)

0.96|Vo|

1.23

1.04|Vo|

Vout=5V (Figure 2)

Efficiency

Vin=12V, Vout=5V, I_L=3A

All Output Voltage Version (Vin= 12V, I_L= 500mA)

Oscillator Frequency (Note 2)

kHz

127

150

173

200

1.5

100

Quiescent Current (Note 3)

Standby Current

ENABLE =5V

1.2

4.5

0.3

7.5

Saturation Voltage (Note 4)

Feedback Bias Current

Duty Cycle (Note 5)

I_LOAD=3A

V_OUT=5V (Adj. Version only)

Operating (ON)

Current Limit (Note 2)(Note 4)

V_OUT=0V

Output Leakage Current (Note 3)

ENABLE Threshold Voltage

ENABLE Input Current

V_OUT=-1V

V_IH(V_OUT=0V)

2.0

V_IL(V_OUT=Normal Output Voltage)

I_IH(ENABLE =5V)

I_IH(ENABLE =0V)

0.6

Note 1: External components such as the catch diode, inductor, input and output capacitors can affect switching regulator

system performance. Refer to Application information for details.

Note 2: The oscillator frequency reduces when the second stage current limit is activated. The amount of reduction is

determined by the severity of current over load.

Note 3: For these parameters, FB is removed from V_OUTand connected to +12V to force the output transistor OFF.

Note 4: V_OUTpin sourcing current. No diode, inductor or capacitor connected to V_OUT.

Note 5: FB is removed from V_OUTand connected to 0V.

TS2596

3-6

2003/12 rev. D

Typical Application Circuit

Figure 1 Fixed Voltage Version

Figure 2: Adjustable Voltage Version

Figure 3: LC filter for Low Output Ripple

TS2596

4-6

2003/12 rev. D

Application Data

Quick Design Component Selection Table for Fixed Output

Input / Output Condition Inductor Output Capacitor

Output Load current Max. Input voltage Inductance Current Nichicon PL series Sprague 595D series

(V)

(A)

(V)

(uH)

(A)

3.5

3.1

3.5

3.1

560

330

270

470

180

470

560

680

470

330

270

390

330

6.3

3.3

Quick Design Component Selection Table for Adjustable Output

Input / Output Condition

Output Capacitor

Feedforword

Capacitor

Output (V)

Nichicon PL series

Sprague 595D series

Value

Unit

820

470

330

220

150

330

270

390

6.3

3.3

1.5

680

560

Schottky Diode Selection Table

Reverse Voltage Forward Rectified Current (4~6A)

(V)

Surface Mount

Through Hole

SR502

SK53C

SK54C

SR503

SR504

(Taiwan Semiconductor Part Number)

TS2596

5-6

2003/12 rev. D

TO-220-5L Mechanical Drawing

TO-220 DIMENSION

MILLIMETERS

INCHES

MIN

DIM

MIN

MAX

10.50

4.440

2.940

1.020

1.830

14.13

5.225

1.370

29.44

2.925

0.477

8.800

6.510

15.31

MAX

0.413

0.175

0.116

0.040

0.072

0.556

0.206

0.054

1.159

0.115

0.019

0.346

0.256

0.603

10.00

3.240

2.440

0.260

1.570

13.31

4.475

1.170

27.60

2.175

0.297

8.280

6.010

14.29

0.394

0.128

0.096

0.010

0.062

0.524

0.176

0.046

1.087

0.086

0.012

0.326

0.237

0.563

TO-263-5L Mechanical Drawing

TO-263 DIMENSION

MILLIMETERS

INCHES

DIM

MIN

10.220

14.600

0.750

1.573

4.560

1.240

2.280

0.280

8.240

1.540

MAX

10.260

15.870

0.770

1.827

4.570

1.270

2.790

0.320

8.280

1.800

MIN

MAX

0.404

0.625

0.030

0.072

0.180

0.050

0.110

0.013

0.326

0.071

0.402

0.575

0.030

0.062

0.179

0.049

0.090

0.011

0.324

0.060

TS2596

6-6

2003/12 rev. D

相关型号：