MAX1958 Просмотр технического описания (PDF) - Maxim Integrated

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MAX1958

W-CDMA/N-CDMA Cellular Phone HBT PA Management ICs

Maxim Integrated 

W-CDMA/N-CDMA Cellular Phone HBT PA

Management ICs

ELECTRICAL CHARACTERISTICS (STEP-DOWN CONVERTER) (continued)

(VINP = VIN = VVCC = V SHDN1 = 3.6V, VPWM = VPGND = VAGND = V SHDN2 = V SHDN3 = 0, VADJ = 1.25V, COMP = IN- = IN+ =

AOUT = TOUT = unconnected, CREF = 0.1µF, TA = -40°C to +85°C, VOUT for MAX1958 = 2.2V, VOUT for MAX1959 = 1.7V, unless

otherwise noted.) (Note 5)

PARAMETER

CONTROLLER

P-Channel On-Resistance

N-Channel On-Resistance

P-Channel Current-Limit

Threshold

P-Channel Pulse-Skipping

Current Threshold

LX Leakage Current

LX RMS Current

Maximum Duty Cycle

Minimum Duty Cycle

Oscillator Frequency

LOGIC INPUTS (PWM, SHDN1)

Logic Input High

Logic Input Low

Logic Input Current

CONDITIONS

ILX = 180mA, VIN = 3.6V

ILX = 180mA, VIN = 2.6V

ILX = 180mA, VIN = 3.6V

ILX = 180mA, VIN = 2.6V

VPWM = 0

VIN = 5.5V

(Note 1)

VPWM = 0

2.6V < VIN < 5.5V

2.6V < VIN < 5.5V

VIN = 5.5V

MIN TYP MAX UNITS

0.4

Ω

0.5

0.3

Ω

0.35

1.1

1.6

A

0.11

0.18

A

-20

+20

µA

1.0

A

100

%

0

%

0.8

1.2

MHz

1.6

V

0.6

V

1

µA

_______________________________________________________________________________________ 7

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