TOREX XC9801, XC9802 User Manual
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XC9801/XC9802 Series
ETR0802_003a
Regulated Voltage Step-Up Charge Pump ICs
GENERAL DESCRIPTION
The XC9801 series are fixed regulated voltage step-up charge pump ICs which provide stable, highly efficient, positive
voltages with the only external components required being 2 capacitors.
Since regulating is done via the control of the charge pump's gate voltage waveform, ripple is minimal. Output voltage is
selectable in 100mV steps within a 2.5V ~ 6.0V range.
Control of the XC9802 switches to PFM (pulse skip) during light loads without affecting output impedance or ripple so that the
IC is protected against drops in efficiency. Connecting the SENSE pin to the GND pin allows the IC to be used as a voltage
doubler.
As well as the ultra small MSOP-8A and USP-8 packages, the small consumption current and high efficiencies of the series
make the XC9801 suitable for use with all types of battery operated applications.
PPLICATIONS
●Palm top computers, PDAs
●On board local power supplies
●Various battery powered devices
TYPICAL APPLICATION CIRCUIT
Regulation Output
FEATURES
Input Voltage Range : 1.8V ~ 5.5V
Output Voltage Range : 2.5V ~ 6.0V
Small Input Current : 80μA (no load:XC9802)
Output Current :
Oscillation Frequency : 300kHz
Stand-by Current (CE ’L’) : 2.0μA (MAX.)
PFM Operation During Light Loads (XC9802)
CE (Chip Enable) Function
Can be used as a step-up doubler (sense = 0V)
Packages : MSOP-8A, USP-8
Environmentally Friendly : EU RoHS Compliant, Pb Free
80mA (3.6V→5.0V step-up)
■TYPICAL PERFORMANCE
CHARACTERISTICS
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XC9801/XC9802 Series
PIN CONFIGURATION
●Selection Guide
●Ordering Information
XC9801/XC9802 ①②③④⑤⑥‑⑦
1
2
3
4
PGND 5
VOUT 8
C1- 6
C1+ 7
C1+ 7
C1- 6
V
OUT 8
PGND 5
MSOP - 8A
(TOP VIEW)
1 SENSE
2 CE
3 V
4 GND
8
7
6
5
IN
USP-8
BOTTOM VIEW)
PRODUCT CLASSIFICATION
SERIES PULSE SKIP MODE
XC9801 Not Available
XC9802 Available
(*1)
PIN ASSIGNMENT
PIN NUMBER
USP-8 MSOP-8A
1 1 SENSE Output Voltage Monitor
2 2 CE Chip Enable (High Active)
3 3 VIN Input (Power Supply)
4 4 GND Ground
5 5 PGND Power Ground
6 6
7 7
8 8 VOUT Output
PIN NAME FUNCTION
C1−
C1＋
External Capacitor - Pin
External Capacitor + Pin
DESIGNATOR
①
②③
④
True Logic Level at CE Pin B Positive
Oscillation Frequency 3 300kHz
ITEM SYMBOL DESCRIPTION
50
Output Voltage
25 ~ 60
Standard voltage
VOUT=5.0V→②=5, ③=0
Semi-custom voltage
OUT=2.5V→②=2, ③=5
e.g. V
KR MSOP-8A (1,000/Reel)
KR-G MSOP-8A (1,000/Reel)
⑤⑥-⑦
Packages (Order Unit)
DR USP-8 (3,000/Reel)
DR-G USP-8 (3,000/Reel)
Regulated output voltage function cannot be used by the following input voltage condition:
V
IN < (VOUT/2), or VIN ≧ VOUT
(*1)
The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant.
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XC9801/XC9802
BLOCK DIAGRAM
(1) Basic Operations
Using the XC9801/02s clock generated by the internal oscillator, a step-up charge pump operation can be brought
about as a result of the alternate switching between operating conditions where P1 & N4 are ON with P2 & P3 OFF
(or) P1 & N4 are OFF with P2 & P3 ON. By connecting the SENSE pin to VOUT, output voltage can be f eedback and
the difference between the feedback voltage and the reference voltage (Vref) are compared by the internal operational
amplifier. Output voltage can be stabilized (* 2) by controlling P3s gate voltage waveform via the signal generated by
the internal amplifier.
Please note that this stabilizing function will not operate with V
By connecting SENSE to ground, the output stability function, as described above, can be halte d and the IC can be
used as a step-up doubler.
* 2 : As a result of P3 gradually reaching an ON state with each clock (signal), rush current is controlled, the ripple
decreases and with the combination of the independent phase compensation circuit, output voltage is stabilized
(2) Stand-by Function
When the voltage at CE (chip enable) is ‘low’ (0V), P1, P2 & P3 will be OFF with N4 & N5 ON. The external capacitor
C1 will discharge and impedance at V
(3) PFM (Pulse Skip) Operations
Whilst maintaining output voltage, the XC9802 provides the added security of protection agai nst drops in efficiency
during light loads as a result of the pulse, generated by the internal oscillator, being skipped and the operating
frequency being changed.
BSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL CONDITIONS UNITS
VIN pin Voltage VIN
VOUT pin Voltage VOUT
C1 + pin Voltage C1+
C1 - pin Voltage C1-
CE pin Voltage VCE
VOUT Pin Output Current IOUT 200 mA
Power Dissipation
Operating Temperature Range Topr
Storage Temperature Range T stg
Controller
IN < (VOUT/2) or VIN ≧ VOUT.
OUT will be high.
Ta = 25℃, GND = 0V
−0.3〜6.0
−0.3〜12.0
−0.3〜V
−0.3〜V
−0.3〜V
MSOP-8A 150
USP-8
Pd
OUT＋0.3
OUT＋0.3
IN＋0.3
120
V
V
V
V
V
mW
−40〜＋85 ℃
−40〜＋125 ℃
Series
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XC9801/XC9802 Series
ELECTRICAL CHARACTERISTICS
XC9801B503KR VOUT=5.0V
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
Output Voltage VOUT Regulation Output IOUT=1mA 4.875 5.000 5.125 V
Load Regulation
△V
OUT
Operating Voltage Range VIN
Supply Current IDD
Regulation Output
Doubler Output, V
1mA≦IOUT≦80mA
OUT>VIN×2×0.95
VIN=3.6V, External Components=CIN only,
SENSE=0V, V
OUT=VIN
Stand-by Current ISTB CE=0V - - 2.0
Oscillation Frequency FOSC
External Component=CIN only,
SENSE=0V, V
OUT open
Output Impedance ROUT Doubler Output IOUT=10mA - 20 40
Input Current
Voltage Converting Efficiency
IIN Doubler Output - 5 - mA
IN2 Regulation Output - 1.5 - mA
I
VEFFI Doubler Output 95 99 - %
EFFI Doubler Output IOUT=10mA 73 78 - %
Power Converting Efficiency
EFFI2 IOUT=1mA - 40 - %
EFFI3
Regulation Output
OUT=80mA 64 69 - %
I
CE / ’H’ Level Voltage VCEH 1.5 - - V
CE / ‘L’ Level Voltage VCEL - - 0.25 V
CE / Input Current ICE
Test Conditions: Unless otherwise stated, Typical Application Circuit, VIN=3.6V,
XC9802B503KR VOUT=5.0V
GND=0V, CE=V
IN, No Load, SENSE=VOUT (Regulation Output)
VIN=5.5V, SENSE=0V,
External Components=C
IN only
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
Output Voltage VOUT Regulation Output IOUT=1mA 4.875 5.000 5.125 V
Load Regulation
△V
OUT
Operating Voltage Range VIN
Supply Current IDD
Regulation Output
Doubler Output, V
IN=3.6V, External Components=CIN only,
V
SENSE=0V, V
OUT=VIN
1mA≦IOUT≦80mA
OUT >VIN×2×0.95
Stand-by Current ISTB CE=0V - - 2.0
Oscillation Frequency FOSC
Switching Pulse Frequency
FOSC2 Regulation Output IOUT=1mA - 10 - kHz
External Component = C
SENSE=0V, V
OUT open
IN only,
Output Impedance ROUT Doubler Output IOUT=10mA - 20 40
Input Current
Voltage Converting Efficiency
IIN Doubler Output - 5 - mA
IN2 Regulation Output - 0.08 - mA
I
VEFFI Doubler Output 98 99 - %
EFFI Doubler Output IOUT=10mA 73 78 - %
Power Converting Efficiency
CE /HLevel Voltage
CE /LLevel Voltage
CE / Input Current ICE
Test Conditions: Unless otherwise stated, Typical Application Circuit, VIN=3.6V,
GND=0V, CE=V
EFFI2 IOUT=1mA - 59 - %
EFFI3
V
CEH 1.5 - - V
V
CEL - - 0.25 V
Regulation Output
OUT=80mA 64 69 - %
I
VIN=5.5V, SENSE=0V,
External Components=C
IN, No Load, SENSE=VOUT (Regulation Output)
IN only
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-100 - 100 mV
1.8 - 5.5 V
1 3 6 mA
255 300 345 kHz
-2.0 - 2.0
-100 - 100 mV
1.8 - 5.5 V
1 3 6 mA
255 300 345 kHz
-2.0 - 2.0
Ta=25℃
μA
Ω
μA
Ta=25℃
μA
Ω
μA
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