TC1682 Datasheet, PDF (2/10 Pages) Microchip Technology – Inverting Charge Pump Voltage Doublers with Active High Shutdown

TC1682/TC1683/TC1684
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Input Voltage (V_IN to GND)....................... +6.0V, -0.3V
Output Voltage (V_OUT to GND)............... -12.0V, +0.3V
Current at V_OUT Pin.............................................20mA
Short-Circuit Duration V_OUT to GND ..............Indefinite
Power Dissipation (T_A ≤ 70°C)
8-Pin MSOP .............................................320mW
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.
TC1682/TC1683/TC1684 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: T_A = -40°C to +85°C, V_IN = +5V, C1 = C2 = 3.3µF (TC1682), C1 = C2 = 1µF (TC1683),
C1 = C2 = 0.33µF (TC1684), SHDN = GND, Typical values are at T_A = +25°C
Symbol
Parameter
Min Typ Max Units Device
Test Conditions
I_DD
Supply Current
—
95
160
µA TC1682
— 225 480
TC1683
— 700 1500
TC1684
I_SHDN Shutdown Supply Current
— 0.5
2
µA All
SHDN = V_IN = +5V
V_MIN
Minimum Supply Voltage
1.8 —
—
V All
R_LOAD = 1kΩ
V_MAX
Maximum Supply Voltage
—
—
5.5
V All
R_LOAD = 1kΩ
F_OSC
Oscillator Frequency
8.4 12
24.5 35
65 125
15.6
45.5
170
kHz TC1682
TC1683
TC1684
V_IH
SHDN Input Logic High
1.4 —
—
V All
V_IN = V_MIN to V_MAX
V_IL
SHDN Input Logic Low
—
—
0.4
V All
V_IN = V_MIN to V_MAX
V_EFF
Voltage Conversion Efficiency
95
99
—
% All
R_LOAD = ∞
R_OUT
Output Resistance
— 120 170
Ω All
I_LOAD = 0.5mA to 10mA (Note 1)
T_WK
Wake-up Time From Shutdown Mode — 1800 —
µsec TC1682 R_LOAD = 2kΩ
— 600 —
TC1683
— 200 —
TC1684
Note 1: Capacitor contribution is approximately 20% of the output impedance (ESR = 1/ pump frequency x capacitance).
DS21537B-page 2
 2002 Microchip Technology Inc.