◆Operating
Voltage Range : 1.2V ~ 5.0V
: 90%
◆Highly
Efficient
◆Low
Power Consumption : 310μA(120kHz)
◆CE(Chip
Enable) Function
◆SOT-26
and USP-6B Packages
■APPLICATIONS
●Cellular
and portable phones
●Miniature
LCD panels
●Palmtop
computers, PDAs
●Various
battery powered systems
■
GENERAL DESCRIPTION
The XC6351A series are charge pump voltage inverter ICs
that have 4 MOSFETs built in. Since highly efficient negative
voltages can be generated with only 2 external capacitors
connected, GaAs bias power supplies & OpAmp's negative
power supplies etc., can be easily accommodated on a
standard PCB.
A mini-molded, 6 pin, SOT-26 and USP-6B packages provides
for space saving and makes high density mounting possible.
Low power consumption and high efficiency make this series
perfect for use with battery operated applications.
Since the IC's operations stop when output is shutdown via
the CE (chip enable) function, total power consumption
reduction is possible in applications which use this IC.
■FEATURES
Operating Voltage Range
Oscillation Frequency
Low Supply Current
: 1.2V ~ 5.0V
: 120kHz
: 35kHz ( custom )
: 310μA ( TYP. )
: 100μA
(35kHz custom TYP.)
High Efficiency
Stand-by Current
Ultra Small Package
: 90% (TYP.) ( RL = 2kΩ)
: 2.0μA (MAX.)
: SOT-26 ,USP-6B
■TYPICAL
APPLICATION CIRCUIT
■TYPICAL
PERFORMANCE
CHARACTERISTICS
XC6351A ETR0801_001.doc
1087
XC6351A
Series
■PIN
CONFIGURATION
GND
CE
C1+
C1-
V
IN
V
OUT
*The dissipation pad for the USP-6B
package should be solder-plated in
recommended mount pattern and metal
masking so as to enhance mounting
strength and heat release.
If the pad needs to be connected to
other pins, it should be connected to
the V
IN
pin.
■PIN
ASSIGNMENT
PIN NUMBER
SOT-26
USP-6B
1
2
3
4
5
6
6
5
4
3
2
1
SYMBOL
GND
CE/
C1+
V
OUT
V
IN
C1-
FUNCTION
Ground
Chip Enable (Low Active)
External Capacitor +Pin
Reverse Output
Power Supply
External Capacitor -Pin
■PRODUCT
CLASSIFICATION
●Ordering
Information
XC6351A
①②③④⑤
DESIGNATOR
① ② ③
DESCRIPTION
Oscillation Frequency
SYMBOL
120
035
M
D
R
L
: 120kHz
: 35kHz (custom)
: SOT-26
: USP-6B
: Embossed tape, standard feed
: Embossed tape, reverse feed
DESCRIPTION
④
Package
⑤
Device Orientation
1088
XC6351A
Series
■PACKAGING
INFORMATION
●SOT-26
●USP-6B
1089
XC6351A
Series
■MARKING
RULE
●SOT-26
6
①
②
①
Represents product series
MARK
PRODUCT SERIES
XC6351AxxxMx
A
②,③
Represents oscillation frequency
5
4
③ ④
MARK
②
③
3
2
0
1
OSCILLATION FREQUENCY
35kHz
120kHz
PRODUCT SERIES
XC6351A035Mx
XC6351A120Mx
1
2
3
SOT-26
(TOP VIEW)
④
Represents production lot number
0 to 9, A to Z repeated (G, I, J, O, Q, W excepted)
①,②,③
Represents product series
MARK
①
5
②
1
③
A
PRODUCT SERIES
XC6351AxxxDx
●USP-6B
1
2
3
6
5
4
USP-6B
(TOP VIEW)
■BLOCK
DIAGRAM
C1+
C1-
V
IN
P1
N2
④ ⑤ ⑥
Chip
Enable
① ② ③
④,⑤
Represents oscillation frequency
MARK
④
0
1
⑤
3
2
OSCILLATION FREQUENCY
35kHz
120kHz
PRODUCT SERIES
XC6351A035Dx
XC6351A120Dx
⑥
Represents production lot number
0 to 9,A to Z repeated (G, I, J, O, Q, W excepted)
Note: No character inversion used.
N3
CE/
N4
V
OUT
Oscillator
Buffer
Note:
1. In operation, the following conditions will be repeated
alternately:
P1 & N3 ON: N2 & N4 OFF
P1 & N3 OFF: N2 & N4 ON
2. In standby mode, P1, N3 & N4 will be ON and N2 will be OFF.
The output pin V
OUT
will be connected to GND.
GND
■ABSOLUTE
MAXIMUM RATINGS
PARAMETER
V
IN
Input Voltage
V
OUT
Pin Voltage
C1+ Pin Voltage
C1- Pin Voltage
CE/ Pin Voltage
I
OUT
Pin Current
Power Dissipation
SOT-26
USP-6B
Operating Temperature Range
Storage Temperature Range
SYMBOL
V
IN
V
OUT
C1+
C1-
CE/
I
OUT
Pd
Topr
Tstg
RATINGS
6.0
-6½0.3
-0.3½V
IN
+ 0.3
V
OUT
- 0.3½0.3
-0.3½V
IN
+ 0.3
50
150
100
-30½＋80
-40½＋125
Ta = 25℃
UNITS
V
V
V
V
V
mA
mW
℃
℃
Note: Voltage is all ground standardized.
1090
XC6351A
Series
■ELECTRICAL
CHARACTERISTICS
FOSC＝120kHz, Ta=25℃
PARAMETER
Supply Current
Operating Voltage Range
Oscillation Frequency
Power Transition Efficiency
Voltage Transition Efficiency
Output Impedance
Stand -by Current
CE/ 'H' Level Voltage
CE/ 'L' Level Voltage
SYMBOL
I
DD
V
IN
FOSC
EFFI
V
EFFI
R
OUT
I
STB
V
CEH
V
CEL
R
L
＝2kΩ
R
L
＝∞
R
L
＝5kΩ
CE/＝V
IN
R
L
＝5kΩ
CONDITIONS
MIN.
-
1.2
75
-
95
-
-
0.9
-
TYP.
310
-
120
90
-
45
-
-
-
MAX.
520
5.0
192
-
-
90
2.0
-
0.25
UNITS
μA
V
kHz
%
%
Ω
μA
V
V
CIRCUIT
1
2
1
2
2
2
3
3
3
Measuring Conditions: Unless otherwise stated, V
IN
= 5.0V, CE/ = 0V
■
TYPICAL APPLICATION CIRCUIT
●Standard
Circuit
External components:
C
IN
= 1μF (ceramic capacitor)
C1 = C2 = 1μF (ceramic capacitor)*
* With the custom 35kHz frequency, C1 = C2 = 3.3
μF
■
NOTES ON USE
1. Please use the IC & external components: within the specified electrical characteristics range and ensure that
absolute maximum ratings are not exceeded.
2. For C1 & C2, please use a capacitor with as small an ESR value as possible.
3. In order to reduce impedance between the IC's input pin and the power supply, we recommend that a capacitor (C
IN
)
be connected to the input side.
4. If an external power supply is applied to the output pin in order to have V
OUT
connected to GND during standby,
large current flows through the IC are a possibility.
capacitance value.
Further, do not use a capacitor at C2 that has a large
1091
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