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Partno Mfg Dc Qty AvailableDescript
MAX635ACPAMAXIM ?N/a120avaiPreset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX635ACPAN/a70avaiPreset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX635ACPAMAXIX ?N/a90avaiPreset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX635ACSAN/a675avaiPreset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX635ACSAMAX N/a1608avaiPreset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX635ACSAMAXIM ?N/a135avaiPreset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX635ACSAMAXIMN/a2072avaiPreset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX635AEPAMAXN/a20avaiPreset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX635AEPAMAXIMN/a71avaiPreset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX635AEPAMAXIM ?N/a56avaiPreset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX635AESAMAXIMN/a100avaiPreset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX635BCPAN/a121avaiPreset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 10%.
MAX636ACPAMAXIMN/a19avaiPreset -12V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX636ACSAN/a200avaiPreset -12V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX636ACSAMAXIMN/a7980avaiPreset -12V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX636AEPAMAXIMN/a33avaiPreset -12V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX636AESAMAXN/a71avaiPreset -12V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX636AESAN/a3avaiPreset -12V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX636AESAMAXIMN/a103avaiPreset -12V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX636AMJAMAXN/a2avaiPreset -12V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX636BCPAMAXIMN/a1avaiPreset -12V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 10%.
MAX636BCSAMAXIMN/a1avaiPreset -12V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 10%.
MAX637ACPAMAXIMN/a20avaiPreset -15V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX637ACPAMAXIM ?N/a40avaiPreset -15V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX637ACSAMAXIMN/a100avaiPreset -15V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX637AESAMAXIMN/a100avaiPreset -15V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
MAX637BCSAMAXIMN/a100avaiPreset -15V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 10%.
MAX637BESAMAXIMN/a36avaiPreset -15V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 10%.


MAX636ACSA ,Preset -12V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.Applications MAX635XMJA -55°C to +125°C 8 CERDIP . . . . . MAX636XCPA 0°C to +70°C 8 Plastic DIP ..
MAX636ACSA ,Preset -12V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.19-0918; Re v tk 5/91 [VI llXI/VI Preset/Adiustable Output CMOS Inverting Switching Regulato ..
MAX636ACSA+ ,Preset/Adjustable Output CMOS Inverting Switching Regulatorsfeatures such as MAX635XCSA 0 C to +70 C 8 Narrow SO Itogic-level shutdown, adjustable oscillator ..
MAX636ACSA+T ,Preset/Adjustable Output CMOS Inverting Switching Regulators19-0918; Re v tk 5/91 [VI llXI/VI Preset/Adiustable Output CMOS Inverting Switching Regulato ..
MAX636AEPA ,Preset -12V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.Applications MAX635XMJA -55°C to +125°C 8 CERDIP . . . . . MAX636XCPA 0°C to +70°C 8 Plastic DIP ..
MAX636AESA ,Preset -12V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.applications require only a diode, output filter . Only 3 External Components capacitor, and a Iow ..
MB15U10 ,Dual Serial Input PLL Frequency Synthesizer On-Chip 1.1 GHz PrescalerFUJITSU SEMICONDUCTORDS04-21339-2EDATA SHEETASSPDual Serial Input PLL Frequency SynthesizerOn-Chip ..
MB15U10PFV ,Dual Serial Input PLL Frequency Synthesizer On-Chip 1.1 GHz PrescalerFUJITSU SEMICONDUCTORDS04-21339-2EDATA SHEETASSPDual Serial Input PLL Frequency SynthesizerOn-Chip ..
MB15U36 ,Dual PLL Frequency Synthesizer with On-Chip PrescalerFeatures Very low spurious and phase noise characteristics 18-bit programmable divider:– Binary 7 ..
MB15U36PFV ,Dual PLL Frequency Synthesizer with On-Chip PrescalerFeatures Very low spurious and phase noise characteristics 18-bit programmable divider:– Binary 7 ..
MB2245BB ,16-bit transceivers with direction pins 3-State
MB2245BB ,16-bit transceivers with direction pins 3-State


MAX635ACPA-MAX635ACSA-MAX635AEPA-MAX635AESA-MAX635BCPA-MAX636ACPA-MAX636ACSA-MAX636AEPA-MAX636AESA-MAX636AMJA-MAX636BCPA-MAX636BCSA-MAX637ACPA-MAX637ACSA-MAX637AESA-MAX637BCSA-MAX637BESA
Preset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.
19-0918; Re v tk 5191
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[Inventing Swnelhting Rlegullators
General Description Features
The MAX635/MAX636/MAX637 inverting switching regu-
lators are designed for minimum component DC-DC
conversion in the 5mW to 500mW range.
Low power applications require only a diode, output filter
capacitor, and a Iow-cost inductor. An additional
MOSFET and driver are needed for higher power appli-
cations. Low battery detection circuitry is included on
. Preset AW, -12V, -15V Output Voltages
t Adjustable Output with 2 Resistors
. 85% Typ Ettleleney
0 Only 3 External Components
0 80M Typ Operating Current
. Low Battery Detector
££9/933’9/9I29WW
The MAX635/636/637 are preset for -5V, -12v, and -15V Ordering Information
outputs, respectively. However, the regulators can be
set to other levels by adding 2 resistors, PART' TEMP. RANGE PIN-PACKAGE
Maxim manufactures a broad line of step-up, step-down, MAX635XCPA 0°C to +7060 8 Plastic DIP
and inverting DC-DC converters, with features such as MAX635XCSA 0''C to +70''C 8 Narrow so
logic-level shutdown, adjustable oscillator frequency, MAX635XC/D 0''C to +70''C Dice
and texternal MOSFET drive. MAX635XEPA -40°C to +85''C 8 Plastic DIP
MAX635XESA -40"C to +85''C 8 Narrow SO
MAX635XEJA -40"C to +850 8 CERDIP
Applications MAX635XMJA -55°C to +125°C 8 CERDIP
Minimum Component, High-Efficiency MAX636XCPA 0°C to +7000 8 Plastic DIP
DC-DC Converters MAX636XCSA O C to +70 C 8 Narrow so
Portable Instruments MAX636XC/D . 0°C to +70''C Dice
Battery Power Conversion MAX636XEPA -40''C to +85''C 8 Plastic DIP
' MAX636XESA -40°C to +85°C 8 Narrow SO
Board Level DC-DC Conversion MAX636XEJA -40°C to +85°C a CERDIP
MAX636XMJA -55°C to +125°C 8 CERDIP
'X = A for 5% Output Accuracy, X = B for 10% Output Accuracy.
Ordering Information continued on last page.
Pin $tontiguration Typical Operating Circuit
TopView
AN -t,-'I(-n
q V 8 VFB -ll00T -157
MM 1 El Wil
MMM glqA2CL6,
L80 E MAX635 El VREF MAX637
MAX636
m E MAX637 E Ws 7 vner LX
GNU E E LX LBI GND
DlP/SO L-lo,
+5v T0 -15v CONVERTER
MAXIM Maxim Integrated Products 1
& the latest literature: http://www.maxim-ic.cam,
MM635/636/(537
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hwairghig Switching] Rtsgullailoirs
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, +Vs (Note 1) ..................... +18V Operating Temperature Range
Input Voltage, LBO, LBI, VFB .......... -O.3V to (+Vs + 0.3V) MAX63_ _C ............................ tYC to +70'C
LX Output Current ........................ 525mA Peak MAX63_ -.E ........................... -40°C to +850
LBO Output Current ............................. 50mA MAX63_ -M ......................... -55'C to +125'C
Power Dissipation Storage Temperature ................... -65'C to +160'C
Plastic DIP (derate 8.33mW/‘C above +50°C) ...... 625mW Lead Temperature (Soldering, 10 set.) ............ +300''C
Small Outline (derate 6mW/° C above +50'C) ....... 450mW T
CERDIP (derate 8mW/''C above +50 "C) ........... 800mW
Stresses be nd those listed under "Absolute Maximum Ratings' may cause permanent damage to the device. These are stress ratings only and functional
operation o the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(TA = +25''C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage (Note 1) +VS 8:}; gggerature lil 12.: V
' No Load, LX Off, .
Supply Current Is OivsTinlgsrature 80 150 PA
+vs = +15V 260 500
TA = +25''C 1.24 1.31 1.38
Reference Voltage VREF Over Temperature 1.20 1.42 V
No Load, VFB = VREF, +Vs = +5V
Over Temperature
. MAXBSSQ -4. 75 -5. 0 -5. 25
VOUT Voltage (Note 2) mxgggA 5% Output Accuracy --1141, l j 1% 8 [1152-765 v
MAX635B -4. 5 -6. 0 AM
MAX6368 10% Output Accuracy ~10. 8 -12.0 -13. 2
MAX637B -13.5 -15.0 -16.5
Efficiency 85 ''/,
Line Regulation (Note 2) +5V<+Vs<+15V 0.5 %VOUT
Load Regulation (Note 2) POUT = OmW to 150mW 0.2 %VOUT
OsciIlatorFrequency fo +VS = +5V 'il/ef/ssl-l) tl 28 ig kHz
Oscillator Duty Cycle +Vs = +5V 40 50 60 %
. Ix = 100mA, +Vs = +5V 9 16
LX On Resistance RON = +15V 4 8 n
+Vs = +16.5V
LX Leakage Current IXL TA = +25''C 0.01 1.0 uA
Over Temperature 30
VFB Input Bias Current IFB 0.01 10 nA
Low Battery Threshold Wm 1.31 V
Low Battery Input Bias Current ILBI 0.01 10 nA
V2=+0.4V V3: +1.IV
Low Battery Output Current ILBo a-- - 5°C 1.0 mA
Over Temperature 0.5
Low Battery Output - -
Leakage Current ILBOL V2 - +16.6V, V3 - +1.4V 0.01 3.0 WA
Note 1: In addition to the Absolute Maximum Rating of +18V, the input voltage also must not exceed 24V- I -VOUTI.
Note 2: Guaranteed by correlation with DC pulse' measurements.
MAX‘IM
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