tc1240a Microchip Technology Inc., tc1240a Datasheet - Page 3

• Manufacturer Part Number: tc1240a
• Description: Positive Doubling Charge Pumps With Shutdown In A Sot-23 Package
• Manufacturer: Microchip Technology Inc.

TC1240A ELECTRICAL SPECIFICATIONS
 2003 Microchip Technology Inc.
Electrical Specifications: Unless otherwise noted, typical values apply at T
values apply for T
Supply Current
Shutdown Supply Current
Minimum Supply Voltage
Maximum Supply Voltage
Output Current
Sum of the R
internal MOSFET Switches
Oscillator Frequency
Switching Frequency (Note 1)
Shutdown Input Logic High
Shutdown Input Logic Low
Power Efficiency
Voltage Conversion Efficiency
Output Resistance (Note 2)
Note 1:
2:
Parameters
Switching frequency is one-half internal oscillator frequency.
Capacitor contribution is approximately 26% of the output impedance [ESR = 1 / switching frequency x
capacitance].
DS(ON)
A
= -40° to +85°C, and V
of the
I
I
V
F
R
P
V
Sym
SHDN
V
R
LOAD
F
V
I
V
OSC
MAX
OUT
DD
EFF
EFF
MIN
SW
SW
IH
IL
IN
= +5.0V, C
Min
2.5
1.4
20
40
86
99
—
—
—
—
—
—
—
—
99.96
0.01
Typ
550
160
80
94
12
—
—
—
—
—
—
4
1
= C
2
Max
= 3.3 µF, SHDN = GND.
900
125
1.0
5.5
0.4
25
—
—
—
—
—
—
—
8
Units
kHz
kHz
mA
µA
µA
%
%
Ω
Ω
TC1240/TC1240A
V
V
V
V
A
R
SHDN = V
I
T
T
V
V
I
R
I
T
= +25°C. Minimum and maximum
LOAD
LOAD
LOAD
A
A
A
LOAD
IN
IN
LOAD
= -40°C to +85°C
= -40°C to +85°C
= -40°C to +85°C
= V
= V
= 20 mA
= 5 mA
= 20 µA
= ∞
= ∞
MIN
MIN
IN
to V
to V
Conditions
MAX
MAX
DS21516C-page 3