TC1219 Datasheet, PDF (2/16 Pages) Microchip Technology – Switched Capacitor Voltage Converters with Shutdown in SOT Packages

TC1219/TC1220
1.0 ELECTRICAL
CHARACTERISTICS
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
Power Dissipation (T_A ≤ 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.
TC1219/TC1220 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: T_A = -40°C to +85°C, V_IN = +5V, C1 = C2 = 10µF, (TC1219), C1 = C2 = 3.3µF (TC1220), T_A = 25°C
unless otherwise noted.
Symbol
Parameter
Min Typ Max Units
Device
Test Conditions
I_DD
Supply Current
— 60 115
— 115 325
µA TC1219
TC1220
I_SHDN
V_MIN
V_MAX
F_OSC
Shutdown Supply Current
Minimum Supply Voltage
Maximum Supply Voltage
Oscillator Frequency
— 0.1 1.0
µA
2.5 —
—
V
— — 5.5
V
6
12
20
kHz TC1219
19 35 56.3
TC1220
SHDN = GND, V_IN = 5V (Note 2)
R_LOAD = 1kΩ
R_LOAD = 1kΩ
V_IH
SHDN Input Logic High
V_IL
P_EFF
SHDN Input Logic Low
Power Efficiency
—
—
—
1.5 —
—
1.8 —
—
1.5 —
—
— — 0.5
—
96
—
—
95
—
V
TC1219
TC1220
V
%
R_LOAD = ∞
V_IN = V_MIN to 3V
V_IN = >3V to V_MAX
V_IN = V_MIN to V_MAX
V_IN = V_MIN to V_MAX
R_LOAD = 1kΩ
V_EFF
Voltage Conversion Efficiency 95 99.9 —
%
R_LOAD = ∞
R_OUT Output Resistance
— 25 65
Ω TC1219/TC1220 I_LOAD = 0.5mA to 25mA (Note 1)
Note 1: Capacitor contribution is approximately 20% of the output impedance [ESR = 1/ pump frequency x capacitance].
2: V_IN is guaranteed to be disconnected from OUT when the converter is in shutdown..
DS21366B-page 2
 2002 Microchip Technology Inc.