TS2596CM5RN [TSC]
3A / 150KHz Buck Dc-Dc Converter; 3A / 150KHz的降压DC-DC转换器
| 型号： | TS2596CM5RN |
| 厂家： | 
TAIWAN SEMICONDUCTOR COMPANY, LTD |
| 描述： | 3A / 150KHz Buck Dc-Dc Converter |
| 文件： | 总8页 (文件大小：486K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TS2596
3A / 150KHz Buck Dc-Dc Converter
TO-220-5L
TO-263-5L
(D2PAK)
Pin Definition:
1. Input
2. SW Output
3. Ground
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 80µA (typical) standby current. The output switch includes
cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.
Features
Ordering Information
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Output Voltage: 3.3V, 5V & Adjustable version
Part No.
Package
TO-220-5L
Packing
50pcs / Tube
Adjustable Output Voltage Range 1.23V~37V ±4%
150KHz fixed switching frequency
Voltage Mode Non-synchronous PWM control
Thermal Shutdown and Current Limit Protection
ON/OFF Shutdown Control Input
High Efficiency
TS2596CZ5xx C0
TS2596CM5xx RN TO-263-5L
800pcs / 13” Reel
Note: Where xx denotes voltage option, available are
50= 5.0V
33= 3.3V
Leave blank for adjustable version
Short Circuit Protect (SCP)
Application
Operating Voltage Can be up to 40V
Output Load Current 3A
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Simple High-efficiency Step down Regulator
Low Power Standby Mode
On-Card Switching Regulators
P+ Product Enhancement Tested
Positive to Negative Converter
Absolute Maximum Rating
Parameter
Symbol
Limit
+45
Unit
V
Maximum Supply Voltage
Recommend Operating Supply Voltage
SW, EN Pin Input Voltage
Feedback Pin Voltage
VCC
VOP
4.5 to 40
-0.3 to +25
-0.3 to +25
Internally Limited
-1
V
VSW, VEN
VFB
V
V
Power Dissipation
PD
W
Output Voltage to Ground
Storage Temperature Range
Operating Temperature Range
ESD Susceptibility (HBM)
VOUT
TST
V
-65 to +150
-40 to +125
2
oC
oC
kV
TOP
1/8
Version: C07
TS2596
3A / 150KHz Buck Dc-Dc Converter
Thermal Information
Parameter
Symbol
Maximum
Unit
TO-220-5L
TO-263-5L
TO-220-5L
TO-263-5L
2
2
Thermal Resistance* (Junction to Case)
ӨJC
oC/W
50
50
Thermal Resistance* (Junction to Ambient)
ӨJA
oC/W
Note: ӨJA is measured with the PCB copper area (need connect to GROUND pins) of approximately 1.5 in2 (Multi-layer)
Electrical Specifications (All Output Voltage Version)
(Ta = 25oC unless otherwise noted, VIN=12V for 3.3V, 5V, Adjustable version. ILOAD =0.3A)
Parameter
Symbol
Test Condition
4.5V≤ VIN ≤40V
Min
1.180
--
Typ
1.23
77
Max Unit
Output Feedback
Efficiency
VFB
η
1.280
--
V
%
V
ADJ
3.3V
5V
0.2A≤ ILOAD ≤3A
VIN =12V, ILOAD =3A, VOUT =5V
4.75V≤ VIN ≤40V
Output Feedback
Efficiency
VFB
η
3.135 3.3V 3.465
0.2A≤ ILOAD ≤3A
VIN =12V, ILOAD =2A
7V≤ VIN ≤40V
--
75
5
--
%
V
Output Feedback
VFB
4.75
5.25
0.2A≤ ILOAD ≤3A
Efficiency
η
VIN =12V, ILOAD =3A
VFB =1.3V (Adj version only)
--
--
80
10
150
3
--
%
nA
Feedback Bias Current
Oscillator Frequency
Soft-Start Time
IFB
100
173
--
FOSC
TSS
127
--
KHz
mS
Rising edge of EN on to ICL
Pear Current, no outside circuit
VFB =0V force driver on
Current Limit
ICL
5.9
--
--
A
Oscillator Frequency of Short Circuit
Protect
When current limit occurred and
VFB <0.5V, Ta = 25oC
FSCP
110
150
173
KHz
IOUT=3A, No outside circuit
VFB =0V force driver on
Saturation Voltage
VSAT
--
1.15
1.3
1.50
V
ON/OFF Pin Logic Input Threshold
Voltage
VIL
VIH
IL
Low (regulator ON)
High (regulator OFF)
VLOGIC =2.5V (OFF)
VLOGIC =0.5V (ON)
VFB =0V force driver on
VFB =12V force driver off
VFB =12V force driver off
ON/OFF pin=5V
--
2.0
--
0.6
--
V
5
0.02
100
0
15
5
ON/OFF Pin Logic Input Current
µA
IH
--
Maximum Duty Cycle (ON)
Maximum Duty Cycle (OFF)
Quiescent Current
--
--
DC
IQ
%
--
--
--
5
10
200
250
mA
µA
--
Standby Quiescent Current
ISTBY
80
VIN =40V
--
No outside circuit,
VFB =12V force driver off
VIN =12V
SW Pin Leakage
Current
SW pin = 0
SW pin = -1
--
--
0.3
7.5
2
mA
mA
ISWL
30
2/8
Version: C07
TS2596
3A / 150KHz Buck Dc-Dc Converter
Block Diagram
3/8
Version: C07
TS2596
3A / 150KHz Buck Dc-Dc Converter
Typical Application Circuit
1. Adjustable Output Voltage Version
2. Fixed Output Voltage Version
3. Adjustable Output Voltage Version with Delayed Startup
4/8
Version: C07
TS2596
3A / 150KHz Buck Dc-Dc Converter
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. To minimize coupling to sensitive circuitry, the PC board copper area connected to this pin
should be minimized.
Feedback
Sense the regulated output voltage to complete the feedback loop.
Enable
Allows the switching regulator circuit to be shutdown using logic level signals thus dropping the total input supply
current to approximately 100uA. Pulling this pin below a threshold voltage of approximately 1.3V turns the regulator on,
and pulling this pin above 1.3V (up to a maximum of Vcc) shuts the regulator down. If this shutdown feature is not
needed, the EN pin can be wired to the ground pin.
Thermal Considerations
The TS2596 is available in two packages, a TO-220-5L and TO-263-5L.
The TO-220-5L package needs a heat sink under most conditions. The size of the heat sink depends on the input
voltage, the output voltage, the load current and the ambient temperature. The TS2596 junction temperature rises
above ambient temperature for a 3A load and different input and output voltages. The data for these curves waos taken
with the TS2596 (TO-220-5L package) operating as a buck switching regulator in an ambient temperature of 25 C (still
air). These temperature rise numbers are all approximate and there are many factors that can affect these
temperatures. Higher ambient temperatures require more heat sinking.
The TO-263-5L surface mount package tab is designed to be soldered to the copper on a printed circuit board. The
copper and the board are the heat sink for this package and the other heat producing components, such2as the catch
diode and inductor. The PC board copper area that the package is soldered to should be at least 0.8 in , and ideally
should have 2 or more square inches of 2 oz.2 Additional copper area improves the thermal characteristics, but with
copper areas greater than approximately 6 in , only small improvements in heat dissipation are realized. If further
thermal improvements are needed, double sided, multilayer PC board with large copper areas and/or airflow are
recommended.
The TS2596 (TO-263-5L package) junction temperature rise above ambient temperature with a 3A load for various
input and output voltages. This data was taken with the circuit operating as a buck switching regulator with all
components mounted on a PC board to simulate the junction temperature under actual operating conditions. This
curve can be used for a quick check for the approximate junction temperature for various conditions, but be aware that
there are many factors that can affect the junction temperature. When load currents higher than 3A are used, double
sided or multilayer PC boards with large copper areas and/or airflow might be needed, especially for high ambient
temperatures and high output voltages.
For the best thermal performance, wide copper traces and generous amounts of printed circuit board copper should be
used in the board layout. (Once exception to this is the output (switch) pin, which should not have large areas of
copper.) Large areas of copper provide the best transfer of heat (lower thermal resistance) to the surrounding air, and
moving air lowers the thermal resistance even further.
5/8
Version: C07
TS2596
3A / 150KHz Buck Dc-Dc Converter
TO-220-5L Mechanical Drawing
TO-220-5L DIMENSION
MILLIMETERS INCHES
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
MIN
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
A
B
C
D
E
F
G
H
I
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
J
K
L
M
N
Marking Diagram
Y
= Year Code
M
= Month Code
(A=Jan, B=Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep,
J=Oct, K=Nov, L=Dec)
L
= Lot Code
XXX = Voltage Code
(3.3=3.3V, 5.0=5V)
= Package Code for Adjustable type
(CZ5 = TO-220-5L
6/8
Version: C07
TS2596
3A / 150KHz Buck Dc-Dc Converter
TO-263-5L Mechanical Drawing
TO-263-5L 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
A
B
C
D
E
F
G
H
I
0.402
0.575
0.030
0.062
0.179
0.049
0.090
0.011
0.324
0.060
J
Marking Diagram
Y
= Year Code
M
= Month Code
(A=Jan, B=Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep,
J=Oct, K=Nov, L=Dec)
L
= Lot Code
XXX = Voltage Code
(3.3=3.3V, 5.0=5V)
= Package Code for Adjustable type
(CM5 = TO-263-5L)
7/8
Version: C07
TS2596
3A / 150KHz Buck Dc-Dc Converter
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. Except as provided in TSC’s terms and conditions of sale for
such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale
and/or use of TSC products including liability or warranties relating to fitness for a particular purpose, merchantability,
or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers
using or selling these products for use in such applications do so at their own risk and agree to fully indemnify TSC for
any damages resulting from such improper use or sale.
8/8
Version: C07
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