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MAX735CPAMAXIM ?N/a13avai-5V/Adjustable, Negative-Output,Inverting, Current-mode PWM Regulators
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MAX735CPA ,-5V/Adjustable, Negative-Output,Inverting, Current-mode PWM Regulatorsfeatures, along with high efficiency and appli- cations circuits that lend themselves to miniaturi ..
MAX735CPA ,-5V/Adjustable, Negative-Output,Inverting, Current-mode PWM RegulatorsFeatures . Converts +2.7V to +9V In Negative Output (MAX75 t" to Adjustable . Converts +4 ..
MAX735CPA ,-5V/Adjustable, Negative-Output,Inverting, Current-mode PWM RegulatorsGeneral Description The MAX735 and MAX755 are CMOS, inverting switch- mode regulators with inte ..
MAX735CPA+ ,-5V, Inverting, PWM DC-DC Converterapplications. The MAX735/MAX755 employ a high-performance current- mode pulse-width modulation ..
MAX735CSA ,-5V/Adjustable, Negative-Output,Inverting, Current-mode PWM Regulatorsapplications. The MAX735/MAX755 employ a high-performance current- mode pulse-width modulation ..
MAX735CSA ,-5V/Adjustable, Negative-Output,Inverting, Current-mode PWM Regulatorsapplications. The MAX735/MAX755 employ a high-performance current- mode pulse-width modulation ..
MB6021A ,SINGLE CHIP CODEC WITH FILTERSFUJITSU hTCRoirLECTR()NTCS 31.5 D, " 37u=17aa 001.71.55 =1 "hu April 1990 Edition 3.0 DA TA ..
MB6021AP ,SINGLE CHIP CODEC WITH FILTERSFUNCTIONAL DESCRIPTION The simplified
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MB6022 , Product Summary Prototyping Kits
MB6022A ,SINGLE CHIP CODEC WITH FILTERSFUNCTIONAL DESCRIPTION The simplified
MB6M ,MINIATURE GLASS PASSIVATED SINGLE-PHASE BRIDGE RECTIFIERThermal Characteristics (TA = 25°C unless otherwise noted)Parameter Symbol MB2M MB4M MB6M UnitDevic ..


MAX735CPA-MAX735CSA-MAX735EPA-MAX755CPA-MAX755CSA
-5V/Adjustable, Negative-Output,Inverting, Current-mode PWM Regulators
19-0017; Rev 1: 9192
"SWAdliusitaihte, Negative-Output,
llnverting, GurrenbModle PWM Regulators
General Description
The MAX735 and MAX755 are CMOS, inverting switch-
mode regulators with internal power MOSFETs. The
MAX755 operates from a +2.7V to +9V input and generates
an adjustable negative output; 1W output power is guaran-
teed when powered from a +4.5V input. The MAX735
operates from a +4.0V to +6.2V output; 200mA output
current is guaranteed for inputs greater than +4.5V. Oui-
escent supply current for the MAX735 is typically 1.6mA,
and ashutdown mode reduces this to 10gA. These power-
conserving features, along with high efficiency and appli-
cations circuits that lend themselves to miniaturization,
make the MAX735/MAX755 excel in a broad range of
on-card and portable-equipment applications.
The MAX735/MAX755 employ a high-performance current-
mode pulse-width modulation (PWM) control scheme to
provide tight output-voltage regulation and low subhar-
monic noise. The fixed-frequency oscillator is factory-
trimmed to 160kHz, allowing for easy noise filtering. The
regulators are production tested in actual application cir-
cuits, and output accuracy is guaranteed to within i5%
over all specified conditions of line, load, and temperature.
The input-to-output differential of the MAX755 is limited
to VIN + IVOUTI S 11.7V.
For an adjustable-output device with a wider input voltage
range, refer to the MAX759 data sheet. For a fixed -5V part
with a wider input voltage range, refer to the MAX739 data
sheet. For fixed -12V and -15V versions, see the MAX736
and MAX737 data sheets. For lower-power applications,
refer to the MAX635/636/637 data sheet
Applications
Board-Level DC-DC Conversion
Battery-Powered Equipment
Computer Peripherals
Typical Operating Circuit
——v.N—————#_7
"tNT0Ai21/
I 47m: 5yiTit + VouT
T MAXIM
l VREF MAX735
"”1 tis a e4 2"
T Ix l H 11 F
l T GND ' I 00"
i cl-- -
l CIRCUIT USES TANTALUM S08FhcE-M00NT CAPACITORS.
2fflALArdietlLfllA]
Features
. Converts +2.7V to +9V Ingut to Adjustable
Negative Output (MAX75 )
. Converts 44.0V to +6.2V Input to AiV Output (MAX735)
. 1W Guaranteed Output Power (Vm k 4.5V)
. 78% Typical Emeleney
. 1.6mA Quiescent Current (MAX735)
. 10M Shutdown Mode
. 160kHz FIxed-Frequeney Oscillator
. Current-Mode PWM - Low Nolse and Jitter
. Soft-Start
' Simple Appllcatlon Clrcult
Ordering Information
PART TEMP. RANGE PIN-PACKAGE
MAX735CPA 0°C to +760 3 Plastic DIP
MAX735CSA 0'c to +70''C a so
MAX7350/D 0°C to +70'C Dice'
MAX735EPA -4o°c to +850 8 Plastic DIP
MAX735ESA -40°C to +85'C a so 4
MAX735MJA -55°c to +125°C a CERDIP" I
MAX7550PA o’c to not a Plastic DIP I
MAX755CSA o‘c to not a so fl
MAX7550ID 0°C to +70°C Dice"
MAX755EPA -40“c to +850 8 Plastic DIP
MAX755ESA 401: to +851: 8 so
MAX755MJA -55°C to +1250 8 CERDIP"
. Contact factory for dice specifications
" Contact factory for availability and processing to MIL-S TD-883.
Pin Configuration
TOPVIEW
§mll MAXIM Ir/ ll,
W T MAX735 7 J
L MAX755 El
ss E E GND
CC E El Vout
DlP/SO
IVl/l X I IVI
Maxim Integrated Products 1
Call toll free 1-800-998-8800 for free samples or literature.
SSLWW/QELXVW
MAX 735/MAX 755
"SWAdl'justalbte, Negative-Output,
Inventing, GurrenbWilodle PWM Regulators
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V+ to GND) MAX735 ............ +7v, -o.3v
MAX755 (Note 1) ..... +11, -0.3V
Switch Voltage (LX to V+) .................. -12.5V, +0.3V
Feedback Voltage (VOUT to GND) ................... 125V
Auxiliary Ingut Voltages
(SS, CC, SHDN to GND) ............. -0.3V to (V+ + 0.3V)
Peak Switch Current (ILx) .......................... 2.0A
Reference Current (IVHEF) ......................... 2.5mA
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 9.09mW/' C above +70'C) ....... 727mW
SO (derate 5,88mW/" C above +70'C) .............. 471mW
CERDIP (derate 8.00mW/°C above +70°C) .......... 640mW
Operating Temperature Ranges:
MAX7_5C_ - ............................. trc to +70'C
MAX7_5E_ _ ........................... M0'C to +85''C
MAX7_5MJA ......................... -55''C to +125'C
Junction Temperatures:
MAX7_SC/E_ - .............................. +150'C
MAX7_5MJA ................................ +175'C
Storage Temperature Range .............. -65'C to +160’C
Lead Temperature (soldering, 10 sec) .............. +300'C
Stresses beyond those listed under 'Absolute Maximum Ratings' may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any olher 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 de vice reliability.
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 2, V+ = 5V, -5.25V S VOUT f -4.75V. (LOAD = 0mA, TA = TMIN to TMAX, typical values are at TA = +25'C, unless
otherwise noted.)
I PARAMETER CONDrl'IONS MIN TYP MAX UNITS
Input Voltage Range MAX735 10 6.2 V
MAXEi(Note 1) 2.7 9.0
OmA < 'LOAD < 200mA,
TA = trs to +r/..IS, -40'C to +85"C (MAX735) -5.25 -5.0 -4.75
Output Voltage V+ = 4.5V to 6.2V TA = o C to +70 C (MAX755) v
OmA < IgOAD < 175mA.
TA = -55 C to +125 C (MAX735) -5.25 -5.0 -4.75
TA = MO'C to +850. -55"C to +125WMAX755)
TA = 0:C to +70:C, -40°C to +85'C (MAX735) 200 275
V+ = 45V1062V TA=OC‘to +7OC(°MAX755)
Output Current 1 $2 =" d'j'.it,o+ty1s.'ii', fi,11xei'irc (MAX755) 175 mA
V+ = 4OV, VOUT = -5V 175
V+ = 2.7V, VOUT = -5V, MAX755 only 125
Line Regulation V+ = 4.0V to 6.2V 0.1 %N -
Load Regulation ILOAD = 0mA to 200mA 0.001 %/mA
Efficiency LOAD = 100mA I 78 % -
Includes switch MAX735 1.6 3.0
Supply Current Current 4 MAX755 1.8 3.5 mA
Standby Current V sVbrq = 0V 10 100 pA_
Short-Circuit Current 1.5 A
_Undervo|tage Lock-Out MAX735 only 3.7 4.0 V_
LX On Resistance 0.5 n
LX Leakage Current VDs = 10V 1 pA
Reference Voltage TA = +25°C (Note 3) 1.15 1.23 1.30 V
Reference Drift TA = TMIN to TMAX 50 ppm/“C
Oscillator Frequency 160 kHz_
Comgensation Pin Impedance 7500 Q
THr-YN Input Current 1 pA
CrirrN Logic High 2.0 v
TH-DN Logic Low 0.25 V
Note 1: Additionaly, VIN is limited to: VIN s 11.7V - IVOUTI
Note 2: MAX755 external feedback resister tolerance is 0.1%.
Note 3: Tested at IVREF = OpA for the MAX735, IVREF = 125pA for the MAX755.
ll/I A X IIVI
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