MAX1962EEP datasheet(3/29 Pages) MAXIM

Part #	MAX1962EEP

Description	2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining

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Manufacturer	MAXIM [Maxim Integrated Products]

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2.35V to 5.5V, 0.5% Accurate, 1MHz PWM

Step-Down Controllers with Voltage Margining

_______________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (continued)

(VVCC = 3.3V, Circuits of Figures 9–12, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

2.7V

≤ VVCC ≤ 5.5V, ILOAD = 1mA to 50mA

4.75

5.25

V

2.35V

≤ VVCC ≤ 2.7V, ILOAD = 1mA to 35mA, C1

= 4.7

µF, C6 = 22µF (Note 1)

4.45

5.25

V

VDD Output Voltage

2.35V

≤ VVCC ≤ 3.6V with tripler, ILOAD = 1 to

50mA (circuit of Figure 12) (Note 1)

4.75

5.25

V

Reference Voltage (No Load)

1.269

1.280

1.291

V

Reference Load Regulation

-50

µA to +50µA3

mV

VOUT = 0.8V

44

53

62

VOUT = 2.0V

45

50

55

Positive Current-Limit Threshold

(VPGND - VLX)

MAX1962

VOUT = 3.3V

38

48

58

mV

Negative Current-Limit Threshold

(VLX - VPGND)

MAX1962, VOUT = 0.8V to 3.3V

38

50

68

mV

CS Bias Current

MAX1962, VCS = 3.3V

20

50

µA

OUT Bias Current

MAX1961/MAX1962, VOUT = 3.3V

30

50

µA

Current-Limit Threshold (Positive

Direction, Fixed, VPGND - VLX)

MAX1960/MAX1961, ILIM = VDD

58

74

90

mV

Current-Limit Threshold (Negative

Direction, Fixed, VLX - VPGND)

MAX1960/MAX1961, ILIM = VDD

50

67

85

mV

MAX1960/MAX1961, RILIM = 160k

Ω

100

114

135

Current-Limit Threshold (Positive

Direction, Adjustable, VPGND - VLX)

RILIM = 400k

Ω

250

279

306

mV

MAX1960/MAX1961, RILIM = 160k

Ω

90

107

125

Current-Limit Threshold (Negative

Direction, Adjustable, VLX - VPGND)

RILIM = 400k

Ω

245

271

296

mV

Thermal-Shutdown Threshold

15

°C hysteresis

+160

°C

DH Gate-Driver On-Resistance

VBST - VLX = 5V, pulling up or down

1.8

3.5

Ω

DL Gate-Driver On-Resistance (Pullup)

DL high state

1.8

3.5

Ω

DL Gate-Driver On-Resistance (Pulldown)

DL low state

0.5

1.6

Ω

DH falling to DL rising

35

Minimum Adaptive Dead Time

DH rising to DL falling

26

ns

Minimum high time (Note 1)

200

FSET/SYNC Pulse Width

Minimum low time (Note 1)

200

ns

FSET/SYNC Rise/Fall Time

(Note 1)

100

ns

CTL_, FSET/SYNC, EN Input High Voltage

VVCC = 2.35V to 5.5V

2.0

V

CTL_, FSET/SYNC, EN Input Low Voltage

VVCC = 2.35V to 5.5V

0.8

V

CTL_, FSET/SYNC, EN Input Current

-1

+1

µA

CLKOUT VOL

Sinking 1mA

0.01

0.1

V

CLKOUT VOH

Sourcing 1mA

VVCC -

0.2V

VVCC -

0.01V

V

CLKOUT Rise/Fall Time

CLOAD = 100pF (Note 1)

40

ns

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