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参数资料
| 型号： | TC1225EUATR |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 15.6 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | MSOP-8 |
| 文件页数： | 2/9页 |
| 文件大小： | 1189K |
| 代理商： | TC1225EUATR |
2
Inverting Dual (–VIN, –2VIN)
Charge Pump Voltage Converters
TC1225
TC1226
TC1227
TC1225/6/7-1 3/24/00
2001 Microchip Technology Inc.
DS21369A
PIN DESCRIPTION
Pin Number
Name
Description
1
C1–
C1 Commutation Capacitor Negative Terminal.
2
C2+
C2 Commutation Capacitor Positive Terminal.
3
C2–
C2 Commutation Capacitor Negative Terminal.
4
–2VIN
Doubling Inverting Charge Pump Output (–2 x VIN).
5
GND
Ground.
6VIN
Positive Power Supply Input.
7
C1+
C1 Commutation Capacitor Positive Terminal.
8–VIN
Inverting Charge Pump Output (–1 x VIN).
ABSOLUTE MAXIMUM RATINGS*
Input Voltage (VIN to GND) ......................... +6.0V, – 0.3V
Output Voltage (–VIN, –2VIN to GND) ........ –12.0V, + 0.3V
Current at –VIN, –2VIN Pins ...................................... 10mA
Short-Circuit Duration –VIN, –2VIN to GND ........ Indefinite
Operating Temperature Range ............... – 40
°C to +85°C
Power Dissipation (TA ≤ 70°C) MSOP-8 ............... 320mW
Storage Temperature (Unbiased) ......... – 65
°C to +150°C
Lead Temperature (Soldering, 10sec) .................. +260
°C
*This is a stress rating 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.
ELECTRICAL CHARACTERISTICS: TA = –40°C to +85°C, VIN = +5V, C1 = 3.3F, C2 = 1F (TC1225); C1 = 1F,
C2 = 0.33
F (TC1226); C1 = 0.33F, C2 = 0.1F (TC1227) unless otherwise noted. Typical values are at TA = +25°C.
Symbol Parameter
Device
Test Conditions
Min
Typ
Max
Unit
IDD
Supply Current
TC1225
—
75
120
A
TC1226
—
200
360
TC1227
—
625
1500
VMIN
Minimum Supply Voltage All
RLOAD = 1k for –VIN output
1.8
—
V
RLOAD = 10k for –2VIN output
VMAX
Maximum Supply Voltage All
RLOAD = 1k for –VIN output
—
5.5
V
RLOAD = 10k for –2VIN output
FOSC
Oscillator Frequency
TC1225
8.4
12
15.6
kHz
TC1226
24.5
35
45.5
TC1227
65
125
170
VEFF1
Voltage Conversion
All
RLOAD = ∞ for –VIN output
96
99.5
—
%
Efficiency (Stage 1)
RLOAD = ∞ for –2VIN output
VEFF2
Voltage Conversion
All
RLOAD = ∞ for –VIN output
94
99
—
%
Efficiency (Stage 2)
RLOAD = ∞ for –2VIN output
ROUT1
Output Resistance
All
ILOAD = 0.5mA to 5mA
—
45
80
for –VIN output (Note 1)
No Load at -2VIN Output
ROUT2
Output Resistance
All
ILOAD = 0.1mA to 1mA
—
135
420
for –2VIN output (Note 1)
No Load at -VIN Output
NOTES: 1. Capacitor contribution is approximately 20% of the output impedance [ESR = 1/ pump frequency x capacitance)].
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC1226 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Inverting Dual (-VIN, -2VIN) Charge Pump Voltage Converters |
| TC1226EUA | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Inverting Dual (-VIN, -2VIN) Charge Pump Voltage Converters |
| TC1227 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Inverting Dual (-VIN, -2VIN) Charge Pump Voltage Converters |
| TC1227EUA | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Inverting Dual (-VIN, -2VIN) Charge Pump Voltage Converters |
| TC122A | 制造商:Thomas & Betts 功能描述:Fittings Connector 0.75inch Steel |
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