MAX5033DUPA datasheet(3/17 Pages) MAXIM

Part #	MAX5033DUPA

Description	500mA, 76V, High-Efficiency, MAXPower Step-Down DC-DC Converter

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Manufacturer	MAXIM [Maxim Integrated Products]

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500mA, 76V, High-Efficiency, MAXPower

Step-Down DC-DC Converter

_______________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (MAX5033_U_ _) (continued)

(VIN = +12V, VON/OFF = +12V, IOUT = 0, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. See the

Typical Application Circuit.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Switch On-Resistance

RDS(ON)

ISWITCH = 500mA

0.4

0.80

Ω

PFM Threshold

IPFM

Minimum switch current in any cycle

35

65

95

mA

FB Input Bias Current

IB

MAX5033D

-150

+0.01

+150

nA

ON/

OFF CONTROL INPUT

ON/OFF Input-Voltage Threshold

VON/OFF

Rising trip point

1.53

1.69

1.85

V

ON/OFF Input-Voltage Hysteresis

VHYST

100

mV

ON/OFF Input Current

ION/OFF

VON/OFF = 0V to VIN

10

150

nA

OSCILLATOR

Oscillator Frequency

fOSC

109

125

135

kHz

Maximum Duty Cycle

DMAX

MAX5033D

95

%

VOLTAGE REGULATOR

Regulator Output Voltage

VD

VIN = 8.5V to 76V, IL = 0mA

6.9

7.8

8.8

V

Dropout Voltage

7.5V

≤ VIN ≤ 8.5V, IL = 1mA

2.0

V

Load Regulation

∆VD/∆IVD 0 to 5mA

150

Ω

PACKAGE THERMAL CHARACTERISTICS

SO package (JEDEC 51)

170

Thermal Resistance

(Junction to Ambient)

θJA

DIP package (JEDEC 51)

110

°C/W

THERMAL SHUTDOWN

Thermal-Shutdown Junction

Temperature

TSH

+160

°C

Thermal-Shutdown Hysteresis

THYST

20

°C

ELECTRICAL CHARACTERISTICS (MAX5033_A_ _)

(VIN = +12V, VON/ OFF = +12V, IOUT = 0, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. See

the Typical Application Circuit.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

MAX5033A

7.5

76.0

MAX5033B

7.5

76.0

MAX5033C

15

76

Input Voltage Range

VIN

MAX5033D

7.5

76.0

V

Undervoltage Lockout

UVLO

5.2

V

MAX5033A, VIN = 7.5V to 76V,

IOUT = 20mA to 500mA

3.185

3.3

3.415

MAX5033B, VIN = 7.5V to 76V,

IOUT = 20mA to 500mA

4.825

5.0

5.175

Output Voltage

VOUT

MAX5033C, VIN = 15V to 76V,

IOUT = 20mA to 500mA

11.58

12

12.42

V

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