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参数资料
| 型号： | TCM829ECT |
| 厂商： | Microchip Technology Inc. |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | Switched Capacitor Voltage Converters |
| 中文描述： | 开关电容电压转换器 |
| 文件页数： | 2/9页 |
| 文件大小： | 75K |
| 代理商： | TCM829ECT |
2
TCM828/829-4 5/22/00
Switched Capacitor
Voltage Converters
TCM828
TCM829
2001 Microchip Technology Inc. DS21488A
ABSOLUTE MAXIMUM RATINGS*
Input Voltage (V
IN
to GND)......................... +6.0V, – 0.3V
Output Voltage (OUT to GND) .................... –6.0V, + 0.3V
Current at OUT Pin ..................................................50mA
Short-Circuit Duration – OUT to GND ................ Indefinite
Operating Temperature Range ...............– 40
°
C to +85
°
C
Power Dissipation (T
A
≤
70
°
C)
5-Pin SOT-23A ...............................................240mW
Storage Temperature (Unbiased) .........– 65
°
C to +150
°
C
Lead Temperature (Soldering, 10 sec) .................+300
°
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:
T
A
= 0
°
C to +85
°
C, V
IN
= +5V, C1 = C2 = 10
μ
F (TCM828), C1 = C2 = 3.3
μ
F
(TCM829), unless otherwise noted. Typical values are at T
A
= +25
°
C.
Symbol Parameter
Device
Test Conditions
Min
Typ
Max
Unit
I
DD
Supply Current
TCM828
TCM829
T
A
= +25
°
C
—
—
1.5
50
115
—
90
260
—
μ
A
V
+
Minimum Supply
Voltage
Maximum Supply
Voltage
Oscillator Frequency
R
LOAD
= 10k
: T
A
= 0
°
C to +85
°
C
V
V
+
R
LOAD
= 10k
—
—
5.5
V
F
OSC
TCM828
TCM829
T
A
= +25
°
C
8.4
24.5
—
95
12
35
96
99.9
15.6
45.5
—
—
kHz
P
EFF
V
EFF
Power Efficiency
Voltage Conversion
Efficiency
Output Resistance
I
LOAD
= 3mA, T
A
= +25
°
C
R
LOAD
=
∞
%
%
R
OUT
I
OUT
= 5mA, T
A
= 25
°
C
T
A
= 0
°
C to +85
°
C
—
—
25
—
50
65
ELECTRICAL CHARACTERISTICS:
T
A
= – 40
°
C to +85
°
C, V
IN
= +5V, C1 = C2 = 10
μ
F (TCM828), C1 = C2 = 3.3
μ
F
(TCM829) unless otherwise noted. Typical values are at T
A
= +25
°
C. (Note 2)
Symbol Parameter
Device
Test Conditions
Min
Typ
Max
Unit
I
DD
Supply Current
TCM828
TCM829
—
—
1.5
6
19
—
—
—
—
—
—
—
115
325
5.5
20
54.3
65
μ
A
V
+
F
OSC
Supply Voltage Range
Oscillator Frequency
R
LOAD
= 10k
V
TCM828
TCM829
kHz
R
OUT
Output Resistance
I
OUT
= 5mA
PIN DESCRIPTION
Pin No.
(5-Pin SOT-23A)
Symbol
Description
1
2
3
4
5
OUT
V
IN
C
–
GND
C
1
Inverting charge pump output.
Positive power supply input.
Commutation capacitor negative terminal.
Ground.
Commutation capacitor positive terminal.
1
+
NOTE:
1. Capacitor contribution is approximately 20% of the output impedance [ESR = 1 / pump frequency x capacitance)].
NOTE:
2. All – 40
°
C to +85
°
C specifications above are guaranteed by design.
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