MAX1714 datasheet(4/24 Pages) MAXIM

Part #	MAX1714

Description	High-Speed Step-Down Controller for Notebook Computers

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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High-Speed Step-Down Controller

for Notebook Computers

4

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS

(Circuit of Figure 1, 4A components from Table 1, V+ = 15V, VCC = VDD = +5V, SKIP = AGND, TA = -40°C to +85°C, unless other-

wise noted.) (Notes 1, 5)

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, 4A components from Table 1, V+ = +15V, VCC = VDD = +5V, SKIP = AGND, TA = 0°C to +85°C, unless otherwise

noted.) (Note 1)

CONDITIONS

V

VCC - 0.4

TON VCC Level

V

3.15

3.85

TON Float Voltage

V

1.65

2.35

TON Reference Level

V

0.5

TON AGND Level

Forced to AGND or VCC

µA

-3

3

TON Input Current

UNITS

MIN

TYP

MAX

PARAMETER

TON = VCC (200kHz)

Reference Voltage

1.98

2.02

V

VCC = 4.5V to 5.5V, no external REF load

PARAMETER

MIN

TYP

MAX

UNITS

TON = unconnected (300kHz)

On-Time

140

180

ns

TON = AGND (600kHz)

Input Voltage Range

228

V

4.5

5.5

TON = REF (450kHz)

Error Comparator Threshold

(DC Output Voltage Accuracy)

(Note 3)

0.985

1.015

V

175

225

With respect to error comparator threshold

(MAX1714A only)

260

320

380

470

Minimum Off-Time

FB = AGND

500

ns

Quiescent Supply Current (VCC)

FB = OUT

750

µA

3.25

3.35

2.462

2.538

Logic Input Current

-1

1

µA

SHDN, SKIP

Logic Input Low Voltage

0.8

V

SHDN, SKIP

Logic Input High Voltage

FB = VDD

V

2.4

V

SHDN, SKIP

VCC Undervoltage Lockout

Threshold

4.1

4.4

Rising edge, hysteresis = 20mV, PWM disabled below

this level

Output Undervoltage

Protection Threshold

65

75

CONDITIONS

%

160

240

With respect to error comparator threshold

VILIM = 2.0V

VILIM = 0.5V

Current-Limit Threshold

(Positive Direction, Adjustable)

35

65

V+ = 24V,

VOUT = 2V

(Note 4)

mV

Overvoltage Trip Threshold

FB forced above the regulation point

PGND - LX

Current-Limit Threshold (Positive

Direction, Fixed)

Battery voltage, V+

85

115

VCC, VDD

mV

PGND - LX, ILIM = VCC

V+ = 4.5V to 28V,

SKIP = VCC

10

15

%

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