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参数资料
| 型号： | TC115301EMT |
| 元件分类： | 稳压器 |
| 英文描述： | 0.4 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封装： | SOT-89, 5 PIN |
| 文件页数： | 5/12页 |
| 文件大小： | 148K |
| 代理商： | TC115301EMT |
2
PFM/PWM Step-up DC/DC Converter
TC115
TC115-1 4/26/99
2001 Microchip Technology Inc.
DS21361A
*Static-sensitive device. Unused devices must be stored in conductive
material. Protect devices from static discharge and static fields. Stresses
above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. These are stress ratings only and functional
operation of the device at these or any other conditions above those
indicated in the operational sections of the specifications is not implied.
Exposure to Absolute Maximum Rating Conditions for extended periods
may affect device reliability.
ABSOLUTE MAXIMUM RATINGS*
Power Supply Voltage (PS) ......................................... 12V
Power Dissipation ................................................ 500 mW
LX Sink Current ..................................................... 400 mA
SHDN Input Voltage .................................................... 12V
Operating Temperature ............................ –40
°C to +85°C
Storage Temperature (TSTG) .................. –40°C to +125°C
ELECTRICAL CHARACTERISTICS: VOUT = 5V; TA = 25°C, unless otherwise noted.
Circuit Configuration per Figure 1.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
VIN
Operating Supply Voltage
Note 5
0.9
—
10.0
V
VSTART
Start-Up Voltage
IOUT = 1 mA
—
0.9
V
ILX(MAX)
LX Maximum Sink Current
—
350
mA
fLIM
LX Limit Frequency
VLX = VLXLIM
—
200
—
KHz
VLXLIM
LX Limit Voltage
Note 2
0.7
—
1.3
V
IDD
No Load Supply Current
IOUT = 0; VIN = VOUT x 0.8 (Note 3)
—
13
26
A
ICC
Operating Supply Current
No external components. VIN = (0.95 x VOUT)
—
80
135
A
(Boost Mode)
applied to PS (or VDD) input
ISTBY
Operating Supply Current
No external components. VIN = (1.1 x VOUT)—
9
17
A
(Standby)
applied to PS (or VDD) input
ISD
Shutdown Supply Current
SHDN = 0V
—
0.5
A
fOSC
Oscillator Frequency
Note 2, Note 4
85
100
115
KHz
VOUT
Output Voltage
VIN = 2.2V minimum, Note 1
VR
V
x 0.975
x 1.025
RSWON
LX Output ON Resistance
VLX = 0.4V
—
1.4
2.4
PFMDUTY
Duty Cycle,
No External Components
10
17
25
%
PFM Operating Mode
MAXDUTY
Maximum Duty Cycle
Note 4
80
87
92
%
tSS
Soft Start Time
4
10
20
msec
η
Efficiency
—
85
—
%
VIH
SHDN Input Low
—
0.2
V
VIL
SHDN Input High
0.75
—
V
Notes:
1. VR is the nominal factory-programmed output voltage setting.
2. VLXLIM is the voltage on the LX pin (with internal switch ON) that will cause the oscillator to run at twice nominal frequency in to limit the
switch current through the internal N-channel switching transistor.
3. Measured with D1 = MA735 (reverse current < 1
A at a reverse voltage of 10V).
4. With TC115 operating in PWM mode.
5. See “Behavior when VIN is greater than the Factory-Programmed VOUT Setting” paragraph under “Detailed Description”.
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| TC115301EMTTR | 功能描述:开关变换器、稳压器与控制器 PFM/PWM Step-Up RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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| TC115331EMTTR | 功能描述:开关变换器、稳压器与控制器 PFM/PWM Step-Up RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| TC115501ECT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:PFM/PWM Step-Up DC/DC Converter |
| TC115501EMTTR | 功能描述:开关变换器、稳压器与控制器 PFM/PWM Step-Up RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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