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TC1220

Switched Capacitor Voltage Converters with Shutdown in SOT Packages

Microchip Technology 

TC1219/TC1220

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.

TC1219/TC1220 ELECTRICAL SPECIFICATIONS

Electrical Characteristics: TA = -40°C to +85°C, VIN = +5V, C1 = C2 = 10µF, (TC1219), C1 = C2 = 3.3µF (TC1220), TA = 25°C

unless otherwise noted.

Symbol

Parameter

Min Typ Max Units

Device

Test Conditions

IDD

Supply Current

— 60 115

— 115 325

µA TC1219

TC1220

ISHDN

VMIN

VMAX

FOSC

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, VIN = 5V (Note 2)

RLOAD = 1kΩ

RLOAD = 1kΩ

VIH

SHDN Input Logic High

VIL

PEFF

SHDN Input Logic Low

Power Efficiency

—

—

—

1.5 —

—

1.8 —

—

1.5 —

—

— — 0.5

—

96

—

—

95

—

V

TC1219

TC1220

V

%

RLOAD = ∞

VIN = VMIN to 3V

VIN = >3V to VMAX

VIN = VMIN to VMAX

VIN = VMIN to VMAX

RLOAD = 1kΩ

VEFF

Voltage Conversion Efficiency 95 99.9 —

%

RLOAD = ∞

ROUT Output Resistance

— 25 65

Ω TC1219/TC1220 ILOAD = 0.5mA to 25mA (Note 1)

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..

DS21366B-page 2

 2002 Microchip Technology Inc.

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