MAX1816ETM 데이터 시트보기 (PDF) - Maxim Integrated

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MAX1816ETM

Dual Step-Down Controllers Plus Linear-Regulator Controller for Notebook Computers

Maxim Integrated 

Dual Step-Down Controllers Plus Linear-

Regulator Controller for Notebook Computers

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, V+ = 15V, VOUT1 = 1.20V, VOUT2 = 2.50V, VCC = VDD = 5.0V, VSKP1/SDN = VSKP2/SDN = VLIN/SDN = 5.0V,

TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.)

PARAMETER

CONDITIONS

MIN

TYP MAX UNITS

LINGOOD Upper Trip Threshold

and LINFB Overvoltage Trip

Threshold

Measured at LINFB with respect to unloaded output

voltage, rising edge (Note 5)

8.0

10.0 12.0

%

PGOOD Propagation Delay

OUT_, FB2 forced 2% above or below PGOOD trip

threshold

10

µs

LINGOOD Turn-On Delay

LINFB forced 2% above LINGOOD lower trip

threshold

1

ms

LINGOOD Turn-Off Delay

LINFB forced 2% below LINGOOD lower trip

threshold

10

µs

PGOOD Transition Delay

After the output-voltage transition on BUCK1 is

complete (PGOOD blanking is enabled for N + 4

clocks, blanking is excluded in startup and

shutdown)

4

Clk

After the output-voltage transition on BUCK1 is

Forced-PWM Mode Transition Delay complete (forced-PWM mode persists for N + 32

clocks for all transitions)

32

Clk

Open-Drain Output Low Voltage

(PGOOD, LINGOOD)

Open-Drain Leakage Current

(PGOOD, LINGOOD)

Input Current

OFS Positive Offset when

Programmed to Zero

OFS Gain

ISINK = 3mA

High state, forced to 5.5V

OFS0–OFS2

Deviation in the output voltage when tested with

OFS_ connected to REF

∆VOUT / ∆VOFS, ∆VOFS = (0.8V - 0V)

∆VOUT / ∆VOFS, ∆VOFS = (2.0V - 1.2V)

0.4

V

1

µA

-0.1

+0.1

µA

2

mV

0.119 0.125 0.131

V/V

0.119 0.125 0.131

_______________________________________________________________________________________ 7

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