V+ to PGND ..........................................................-0.3V to +25V

SGND to PGND....................................................-0.3V to +0.3V

VL to SGND.................-0.3V to the lower of +6V or (V+ + 0.3V)

BST1/VDD1, BST2/VDD2, DRAIN_, PFO, RST, PGOOD1 to

SGND ................................................................-0.3V to +30V

BST1/VDD1 to SOURCE1,

BST2/VDD2 to SOURCE2...................................-0.3V to +6V

SOURCE_ to SGND..............................................-0.6V to +25V

EN_ to SGND..............................................-0.3V to (VL + 0.3V)

CLKOUT, BYPASS, OSC, FSEL1, COMP1,

COMP2, PFI, MR, SYNC, FB_ to SGND -0.3V to (VL + 0.3V)

SOURCE1, DRAIN1 Peak Current ............................5A for 1ms

SOURCE2, DRAIN2 Peak Current ............................3A for 1ms

VL, BYPASS to SGND Short Circuit .........................Continuous

Continuous Power Dissipation (TA = +70°C)

32-Pin Thin QFN (derate 21.3mW/°C above +70°C)...2758mW*

Package Junction-to-Case Thermal Resistance (θJC) .....2°C/W

Operating Temperature Ranges:

MAX5072ETJ (TMIN to TMAX)...................... -40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range............................ -65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

*As per JEDEC51 standard.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SYSTEM SPECIFICATIONS

Input Voltage Range

V+

(Note 2)

5.5

23

V

VL = V+

4.5

5.5

Operating Supply Current

VL unloaded, no switching,

2.2

4

mA

V+ Standby Supply Current

EN_ = 0, MR, PFO, and PGOOD_ floating,

0.6

1.4

mA

Efficiency

ƞ

V+ = VL = 5V

82

%

V+ = 12V

80

V+ = 16V

78

STARTUP/VL REGULATOR

VL Undervoltage Lockout Trip

Level

UVLO

VL falling

3.95

4.1

4.25

V

VL Undervoltage Lockout

Hysteresis

175

mV

VL Output Voltage

VL

4.9

5.2

5.5

V

BYPASS OUTPUT

BYPASS Voltage

1.98

2.00

2.02

V

BYPASS Load Regulation

0

2

10

mV

SOFT-START

Digital Ramp Period

Internal 6-bit DAC

2048

clock

cycles

Soft-Start Steps

64

steps

www.maximintegrated.com

Maxim Integrated │ 2

MAX5072

2.2MHz, Dual-Output Buck or Boost

Converter with POR and Power-Fail Output

Absolute Maximum Ratings

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 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