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NCMOS Low Power Consumption NPFM Controlled, Step-Up DC/DC Converter N5 Level Window Comparator NVoltage Detector × 2 ( Independent Power Supply ) NTSSOP-16 Package
GBattery Powered Equipment GVarious Portable Equipment
The XC651A series are step-up DC/DC converter and multi voltage detector IC s. CMOS processes and laser trimming technology provide high accuracy and low power consumption. The XC651A comprises of a PFM controlled step-up DC/DC converter, a voltage detector with 4 x 5 level window comparators built-in, plus 2 other voltage detectors. The step-up DC/DC converter's EN pin ( chip enable ) provides power consumption savings when the step-up operations are not operating ( stand-by mode ). The series is available in a small TSSOP-16 package.
Independent power supply for each built-in block : Each of the following built-in blocks is operated by a separate power supply : PFM controlled, step-up DC/DC converter ( PFM DC/DC ) 5 level window comparator ( MWVD ) Negative Logic : XC651A3 Series Positive Logic : XC651A4 Series Voltage detector 1 with built-in delay circuit ( VD1 ) Voltage detector 2 ( VD2 ) Highly accurate set-up voltage : PFM controlled, step-up DC/DC converter : set-up voltage accuracy ±2.5% 5 level window comparator : set-up voltage accuracy ±2% Voltage detectors 1, 2 : set-up voltage accuracy ±2% Set-up voltage range : PFM controlled, step-up DC/DC converter : 2.0V ~ 3.0V ( selectable in 0.1V steps) 5 level window comparator : 1.1V ~ 2.5V * ( selectable in 0.1V steps ) Voltage detectors 1, 2 : 0.9V ~ 3.0V ( selectable in 0.1V steps ) Operational voltage range : 0.9V ~ 6.0V Small Package : TSSOP-16 * Note : The set-up voltage of the 5 level window comparator cannot be freely set-up due to the limitations of the circuit. Please also note that the set-up voltage range of MWVD1 is 1.0V ~ 1.8V.
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PIN NUMBER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
PIN NAME MWVD IN RIP MW OUT1 MW OUT2 MW OUT3 MW OUT4 CD V IN1 V DET1 V DET2 V IN2 EN V SS Lx EXT V OUT
FUNCTION MWVD detect, MWVD current MWVD ripple exclusion capacitor connection MWVD output 1 MWVD output 2 MWVD output 3 MWVD output 4 VD1 delay time set-up capacitor connection VD1 detect, VD1 current VD1 output VD2 output VD2 detect, VD2 current DC/DC enable Ground pin ( common ) DC/DC built-in transistor switch output DC/DC external transistor drive output DC/DC output voltage monitor, DC/DC current
GOrdering Information
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GTSSOP-16
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GTSSOP-16
1) Overall Composition
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Note 1 : The VSS pin is common to each block. Note 2 : The VDD pin is independent of each block.
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2) PFM DC/DC
Note 1 : The VSS pin is common to each block. Note 2 : VDD is independent for each block.
3) MWVD
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Note 1 : The VSS pin is common to each block. Note 2 : VDD is independent for each block. Note 3 : Applies to the XC6514 Series (Positive Logic) only.
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4) VD 1
Note 1 : The VSS pin is common to each block. Note 2 : VDD is independent for each block.
5) VD 2
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Note 1 : The VSS pin is common to each block. Note 2 : VDD is independent for each block.
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PARAMETER Output Voltage Lx Pin Voltage Lx Pin Current EXT Pin Voltage EXT Pin Current EN Input Voltage MWVDIN Input Voltage RIP Input Voltage MWOUT Output Voltage MWOUT Output Current VIN Input Voltage VDET Output Voltage VDET Output Current CD Input Voltage Continuous Total Power Dissipation Operating Ambient Temperature Storage Temperature
SYMBOL VOUT VLX ILX VEXT IEXT VEN MWVDIN VRIP VMWOUT IMWOUT VIN VDET IDET VCD Pd Topr Tstg
CONDITIONS 9 9 400 -0.3 ~ VOUT + 0.3 ± 50 -0.3 ~ VOUT + 0.3 9 -0.3 ~ MWVDIN + 0.3 9 50 9 9 50 -0.3 ~ VIN1 + 0.3 350 -30 ~ +80 -40 ~ +125
Ta=25 OC UNITS V V mA V mA V V V V mA V V mA V mW
O O
C C
(note that the above is a sample part number and that actual part numbers will differ)
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Set-Up Voltage
BLOCK 1. PFM DC/DC 2. MWVD PARAMETER Output Voltage MWOUT1 detect voltage MWOUT2 detect voltage MWOUT3 detect voltage MWOUT4 detect voltage Detect Voltage 1 Detect Voltage 2 SYMBOL VOUT VDFMW1 VDFMW2 VDFMW3 VDFMW4 VDF1 VDF2
SET-UP VOLTAGE VALUE
Ta=25 OC UNITS V V V V V V V
3. VD1 4.VD2
2.500 1.275 1.245 1.210 1.060 1.500 0.950
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1. PFM DC/DC
PARAMETER Output Voltage Operating Voltage Operating Start-Up Voltage Operating Hold Voltage Supply Current 1 Supply Current 2 Lx Switch ON Resistance Lx Leak Current Lx Control Voltage EXT H ON Resistance EXT L ON Resistance Duty Ratio 1 Duty Ratio 2 Max Oscillator Frequency Stand-by Current EN H Voltage EN L Voltage EN H Current EN L Current Efficiency (note 1) SYMBOL VOUT VIN VST VHLD IDD1 IDD2 RSWON ILXL VLXLMT
When the oscillator frequency is more than double Ext. components connected, IOUT=1mA Ext. components connected, IOUT=1mA Output Voltage x 0.95 applied to VOUT Output Voltage + 0.5V applied to VOUT Output Voltage x 0.95 applied to VOUT,VLX.