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TC1221 Datasheet(PDF) 2 Page - Microchip Technology

Part No. TC1221
Description  High Frequency Switched Capacitor Voltage Converters with Shutdown in SOT Packages
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Maker  MICROCHIP [Microchip Technology]
Homepage  http://www.microchip.com
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TC1221 Datasheet(HTML) 2 Page - Microchip Technology

 
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TC1221/TC1222
DS21367B-page 2
 2002 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Input Voltage (VIN 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
Power Dissipation (TA ≤ 70°C)
6-Pin SOT-23A .........................................240mW
Operating Temperature Range............. -40°C to +85°C
Storage Temperature (Unbiased) .......-65°C to +150°C
*Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent 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
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
TC1121 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: TA = -40°C to +85°C, VIN = +5V, C1 = C2 = 1µF, (TC1221), C1 = C2 = 0.22µF (TC1222), Typical values
are at TA = +25°C.
Symbol
Parameter
Min
Typ
Max
Units
Device
Test Conditions
IDD
Supply Current
290
1800
600
2800
µA
TC1221
TC1222
ISHDN
Shutdown Supply Current
0.01
1.0
µA
SHDN = GND, VIN = 5V (Note 2)
VMIN
Minimum Supply Voltage
1.8
——
VRLOAD = 1kΩ
VMAX
Maximum Supply Voltage
——
5.5
V
RLOAD = 1kΩ
FOSC
Oscillator Frequency
81
550
125
750
169
950
kHz
TC1221
TC1222
VIH
SHDN Input Logic High
1.4
VVIN = VMIN to VMAX
VIL
SHDN Input Logic Low
——
0.4
V
VIN = VMIN to VMAX
PEFF
Power Efficiency
90
70
%
TC1221
TC1222
RLOAD = 1kΩ
VEFF
Voltage Conversion Efficiency
94
96
%RLOAD = ∞
ROUT
Output Resistance
25
65
ILOAD = 0.5mA to 25mA (Note 1)
TWK
Wake-up Time From Shutdown
Mode
80
25
µsec
TC1221
TC1222
RLOAD = 1kΩ
Note
1:
Capacitor contribution is approximately 20% of the output impedance [ESR = 1/ pump frequency x capacitance].
2:
VIN is guaranteed to be disconnected from OUT when the converter is in shutdown..


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