5. Charge Pump ICs
__________________________________________________________________________________
鈫?/div>
5V step-up)
Oscillation Frequency:
300kHz
Stand-By Current (CE 'L'):
2.0
碌
A (max)
Can be used as a Step-Up Doubler (sense = 0V)
MSOP-8A Package
The XC9801 series are step-up charge pump ICs which
provide stable, highly efficient, positive voltages with the only
external components required being 2 capacitors. Output
1
voltage is selectable in 0. V steps within a 2.5V ~ 5.2V range
and with output stabilised through the control of the charge
pump's output impedance, ripple is minimal.
Control switches to PFM (pulse skip) during light loads
without affecting output impedance or ripple so that the IC is
protected against drops in efficiency.
As well as the ultra small MSOP-8 package, the small con-
sumption current and high efficiencies of the series make the
XC9801 suitable for use with all types of battery operated ap-
plications.
Pin Configuration
SENSE
CE
V
IN
GND
MSOP-8A
(TOP VIEW)
V
OUT
C1+
C1-
PGND
Pin Assignment
PIN
NUMBER
1
2
3
4
5
6
7
8
PIN
NAME
SENSE
CE
V
IN
GND
PGND
C1 -
C1 +
V
OUT
FUNCTION
Output Voltage Monitor
Chip Enable
Input (power supply)
Ground
Power Ground
External Capacitor -
External Capacitor +
Output
Block Diagram
C1+
C1-
V
IN
N5
P1
P2
V
OUT
P3
N4
CE
Chip
Enable
SENSE
Oscillator
Controler
Vref
GND
PGND
Ordering Information
XC9801/02鈶犫憽鈶⑩懀鈶も懃
DESIGNATOR
鈶?/div>
鈶?/div>
鈶?/div>
鈶?/div>
鈶?/div>
鈶?/div>
B
25~52
3
K
R
L
DESCRIPTION
True Logic Level at CE Pin : Positive
Output Voltage (2.5V ~ 5.2V)
5.0V
鈫?鈶?5, 鈶?0
Oscillator Frequency : 300kHz
Package : MSOP-8A (1reel = 1000pcs)
Embossed tape. Standard Feed
Embossed tape. Reverse Feed
52
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