MAX652CSLASHD datasheet(3/16 Pages) MAXIM

3 / 16 page

5V/3.3V/3V or Adjustable, High-Efficiency,

Low IQ, Step-Down DC-DC Controllers

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(V+ = 5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

MIN

TYP

MAX

-45

UNITS

V+ = 16.5V, SHDN = 0V or V+

-45

SHDN Input Current

µA

Output Voltage

Load Regulation

-47

mV/A

CONDITIONS

Circuit of

Figure 1

MAX649, 0

≤ ILOAD ≤ 1.5A,

VIN = 10V

MAX651, 0

≤ ILOAD ≤ 1.5A,

VIN = 5V

MAX652, 0

≤ ILOAD ≤ 1.5A,

VIN = 5V

MAX649, V+ = 10V,

ILOAD = 1A

MAX651, V+ = 5V,

ILOAD = 1A

MAX652, V+ = 5V,

ILOAD = 1A

Efficiency

Circuit of

Figure 1

≤ V+ ≤ 16.5V

SHDN Input Voltage High

1.6

VIH

≤ V+ ≤ 16.5V

0.4

VIL

SHDN Input Voltage Low

≤ V+ ≤ 16.5V

CS Input Current

±1

µA

V+ = 12V

µs

tON

(max)

Switch Maximum

On-Time

CEXT = 0.001µF, V+ = 12V

EXT Rise Time

CEXT = 0.001µF, V+ = 12V

EXT Fall Time

V+ = 12V

Switch Minimum

Off-Time

1.8

2.3

2.8

µs

tOFF

(min)

MAX649C/E, MAX65_C/E

Current-Limit Trip

Level (V+ to CS)

180

210

240

VCS

MAX649M, MAX65_M

160

210

260

≤ V+ ≤ 16.5V

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