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TS2509 데이터시트 PDF




Taiwan Semiconductor Company에서 제조한 전자 부품 TS2509은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 TS2509 자료 제공

부품번호 TS2509 기능
기능 3A / 500KHz PWM Buck Converter
제조업체 Taiwan Semiconductor Company
로고 Taiwan Semiconductor Company 로고


TS2509 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




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TS2509 데이터시트, 핀배열, 회로
TS2509
3A / 500KHz PWM Bwwuwc.DkataCShoeent4vU.ecormter
SOP-8
Pin Definition:
1. FB
8. Vss
2. EN
7. Vss
3. Comp 6. SW
4. Vcc
5. SW
General Description
TS2509 consists of step-down switching regulator with PWM control. These devise include a reference voltage
source, oscillation circuit, error amplifier, internal PMOS and etc. TS2509 provides low-ripple power, high efficiency,
and excellent transient characteristics. The PWM control circuit is able to the duty ratio linearly form 0 up to 100%.
This converter also contains an error amplifier circuit as well as a soft-start circuit that prevents overshoot at startup.
An enable function, an over current protect function and short circuit protect function are built inside, and when OCP
or SCP happens, the operation frequency will be reduced. Also, an internal compensation block is built in to minimum
external component count. With the addition of an internal P-channel Power MOS, a coil, capacitors, and a diode
connected externally, these ICs can function as step-down switching regulators. They serve as ideal power supply
units for portable devices when coupled with the SOP-8L package, providing such outstanding features as low current
consumption. Since this converter can accommodate an input voltage up to 23V, it is also suitable for the operation
via an AC adapter.
Features
Input Voltage: 3.6V~23V
Output Voltage: 0.8V~Vcc
Duty Ratio: 0%~100% PWM Control
Oscillation Frequency: 500kHz typ.
Soft-Start (SS), Current Limit (CL), Enable Function
Thermal Shutdown Function
Short Circuit Protect (SCP)
External SW P-Channel MOSFET
Low ESR output capacitor (MLCC application)
Ordering Information
Part No.
TS2509CS RL
Package
SOP-8
Packing
2.5Kpcs / 13” Reel
Application
Simple High-efficiency Step down Regulator
On-Card Switching Regulators
Absolute Maximum Rating
Parameter
Symbol
Rating
Unit
VCC Pin Voltage
Feedback Pin Voltage
VCC VSS - 0.3 to VSS + 25 V
VFB VSS - 0.3 to VCC
V
ON/OFF Pin Voltage
Switch Pin Voltage
Power Dissipation
Storage Temperature Range
Operating Temperature Range
Operating Supply Voltage
VEN
VSW
PD
TST G
TOP
VOP
VSS - 0.3 to VCC + 0.3
VSS - 0.3 to VCC + 0.3
Internally limited
-40 to +150
-20 to +125
+3.6 to +23
V
V
mW
V
Thermal Resistance from Junction to case
θJC
40 /W
Thermal Resistance from Junction to ambient
θJA
70 /W
1/9 Version: A09




TS2509 pdf, 반도체, 판매, 대치품
TS2509
3A / 500KHz PWM Bwwuwc.DkataCShoeent4vU.ecormter
Function Descriptions
PWM Control
The TS2509 consists of DC/DC converters that employ a pulse-width modulation (PWM) system. In converters of the
TS2509, the pulse width varies in a range from 0 to 100%, according to the load current. The ripple voltage produced
by the switching can easily be removed through a filter because the switching frequency remains constant. Therefore,
these converters provide a low-ripple power over broad ranges of input voltage and load current.
Setting the Output Voltage
Application circuit item shows the basic application circuit with TS2509 adjustable output version. The external resistor
sets the output voltage according to the following equation:
(EL CAP) Resistor select for output voltage setting
VOUT
5V
3.3V
2.5V
1.8V
1.5V
1.2V
1V
R2
1.3K
1.5K
2.2K
2K
2.2K
3K
10K
R1
6.8K
4.7K
4.7K
2.5K
2K
1.5K
2.5K
(MLCC) Resistor select for output voltage setting
VOUT
5V
3.3V
2.5V
1.8V
1.5V
1.2V
1V
R2
7.5K
15K
22K
27K
30K
30K
56K
R1
39K
47K
47K
33K
27K
15K
13K
Inductor Selection
For most designs, the operate with inductors of 10µH to 22µH. The inductor value can be derived from the following
equation:
L1 Recommend Value (VIN=12V, IOUT=3A)
VOUT
1.8V
2.5V
3.3V
L1 Value 10~15uH 10~15uH 15~22uH
5V
15~22uH
Where is inductor Ripple Current. Large value inductors lower ripple current and small value inductors result in high
ripple currents. Choose inductor ripple current approximately 15% of the maximum load current 3A, ΔIL=0.4A. The DC
current rating of the inductor should be at least equal to the maximum load current plus half the ripple current to
prevent core saturation (3A+0.2A).
Input Capacitor Selection
(EL CAP)
This capacitor should be located close to the IC using short leads and the voltage rating should be approximately 1.5
times the maximum input voltage. The RMS current rating requirement for the input capacitor of a buck regulator is
approximately 1⁄2 the DC load current. A low ESR input capacitor sized for maximum RMS current must be used. A
220µF low ESR capacitor for most applications is sufficient.
(MLCC)
A 22µF MLCC or two 10uF MLCC capacitors for most applications is sufficient.
4/9 Version: A09

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TS2509 전자부품, 판매, 대치품
Electrical Characteristics Curve
TS2509
3A / 500KHz PWM Bwwuwc.DkataCShoeent4vU.ecormter
Figure 7. Efficiency
Figure 8.Output Ripple (VIN=12V, VOUT=5V, IOUT=3A)
(VIN=12V, VOUT=5V, IOUT=3A)
Figure 9.Power On test Wave
(VIN=12V, VOUT=5V, IOUT=0.2A)
Figure 10.Power On test Wave
(VIN=12V, VOUT=5V, IOUT=0.1~3A)
Figure 11. Load Transient Response
7/9
Version: A09

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