MAX1626CSLASHD datasheet(4/16 Pages) MAXIM

4 / 16 page

5V/3.3V or Adjustable, 100% Duty-Cycle,

High-Efficiency, Step-Down DC-DC Controllers

_______________________________________________________________________________________

____________________________Typical Operating Characteristics (continued)

(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)

-60 -40

MAX1626 SHUTDOWN CURRENT

vs. TEMPERATURE

TEMPERATURE (°C)

0.1

0.3

0.2

0.5

0.4

0.6

0.7

0.8

-20

20 40 60 80 100 120 140

APPLICATION CIRCUIT

SHUTDOWN CURRENT:

A: V+ = +15V

B: V+ = +10V

C: V+ = +4V

MAX1626 SHUTDOWN

CURRENT:

D: V+ = +16V

E: V+ = +4V

400

2000

4000

EXT RISE AND FALL TIMES

vs. CAPACITANCE

100

300

250

350

CAPACITANCE (pF)

200

150

tRISE, V+ = +15V

tFALL, V+ = +5V

tRISE, V+ = +5V

tFALL, V+ = +15V

-60 -40 -20

40 60

140

EXT RISE AND FALL TIMES

vs. TEMPERATURE

TEMPERATURE (°C)

100 120

tFALL, V+ = +5V

CEXT = 1nF

3/5 = 0V

OUT = 50kHz, 0.3Vp-p, 3.3VDC

tRISE, V+ = +5V

tRISE, tFALL, V+ = +15V

-60 -40

MAX1626

V+ QUIESCENT CURRENT

vs. TEMPERATURE

TEMPERATURE (°C)

-20

20 40 60 80 100 120 140

3/5 = 0V

OUT FORCED TO 3.4V

V+ = +16V

V+ = +10V

V+ = +4V

1234

MAX1626 EXT OFF TIME

vs. OUTPUT VOLTAGE

OUTPUT VOLTAGE (V)

V+ = +5V

3/5 = GND

3/5 = V+

0.2

0.4

0.6

0.8

1.0

1.2

1.4

MAX1627 EXT OFF TIME

vs. FB PIN VOLTAGE

FB PIN VOLTAGE (V)

V+ = +5V

115

-60 -40 -20 0

20 40 60 80 100 120 140

CS TRIP LEVEL vs. TEMPERATURE

105

110

TEMPERATURE (°C)

100

OUT = 0V

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