TCM828ECT713 Datasheet, PDF (2/9 Pages) Microchip Technology – Switched Capacitor Voltage Converters

Switched Capacitor
Voltage Converters
TCM828
TCM829
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 = 10µF (TCM828), C1 = C2 = 3.3µF
(TCM829), unless otherwise noted. Typical values are at T_A = +25°C.
Symbol Parameter
Device Test Conditions
Min Typ Max Unit
I_DD
V⁺
V⁺
F_OSC
P_EFF
V_EFF
R_OUT
Supply Current
Minimum Supply
Voltage
Maximum Supply
Voltage
Oscillator Frequency
Power Efficiency
Voltage Conversion
Efficiency
Output Resistance
TCM828
TCM829
TCM828
TCM829
T_A = +25°C
R_LOAD = 10kΩ: T_A = 0°C to +85°C
R_LOAD = 10kΩ
T_A = +25°C
I_LOAD = 3mA, T_A = +25°C
R_LOAD = ∞
I_OUT = 5mA, T_A = 25°C
T_A = 0°C to +85°C
—
50
—
115
1.5
—
—
—
8.4
12
24.5
35
—
96
95
99.9
—
25
—
—
90
µA
260
—
V
5.5
V
15.6 kHz
45.5
—
%
—
%
50
Ω
65
NOTE: 1. Capacitor contribution is approximately 20% of the output impedance [ESR = 1 / pump frequency x capacitance)].
ELECTRICAL CHARACTERISTICS: T_A = – 40°C to +85°C, V_IN = +5V, C1 = C2 = 10µF (TCM828), C1 = C2 = 3.3µF
(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
V⁺
F_OSC
Supply Current
Supply Voltage Range
Oscillator Frequency
TCM828
TCM829
TCM828
TCM829
R_LOAD = 10kΩ
R_OUT
Output Resistance
I_OUT = 5mA
NOTE: 2. All – 40°C to +85°C specifications above are guaranteed by design.
—
—
115
µA
—
—
325
1.5
—
5.5
V
6
—
20
kHz
19
—
54.3
—
—
65
Ω
PIN DESCRIPTION
Pin No.
(5-Pin SOT-23A)
1
2
3
4
5
Symbol
OUT
V_IN
C_1–
GND
C⁺¹
Description
Inverting charge pump output.
Positive power supply input.
Commutation capacitor negative terminal.
Ground.
Commutation capacitor positive terminal.
TCM828/829-4 5/22/00
2
© 2001 Microchip Technology Inc. DS21488A