MAX1717 Maxim, MAX1717 Datasheet - Page 5

• Manufacturer Part Number: MAX1717
• Description: Dynamically Adjustable / Synchronous Step-Down Controller for Notebook CPUs
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V+ = +15V, V
Note 1: Output voltage accuracy specifications apply to DAC voltages from 0.925V to 2V. Includes load-regulation error.
Note 2: On-Time specifications are measured from 50% to 50% at the DH pin, with LX forced to 0, BST forced to 5V, and a 500pF
Note 3: Specifications to -40°C are guaranteed by design and not production tested.
Quiescent Supply Current (V
Quiescent Supply Current (V
Quiescent Battery Supply
Current (V+)
Shutdown Supply Current (V
Shutdown Supply Current (V
Shutdown Battery Supply
Current (V+)
Reference Voltage
Overvoltage Trip Threshold
Output Undervoltage Protection
Threshold
Current-Limit Threshold
(Positive, Default)
Current-Limit Threshold
(Positive, Adjustable)
Current-Limit Threshold
(Negative)
V
Threshold
DH Gate Driver On-Resistance
DL Gate Driver On-Resistance
Logic Input High Voltage
Logic Input Low Voltage
DAC B-Mode Programming
Resistor, Low
DAC B-Mode Programming
Resistor, High
VGATE Lower Trip Threshold
VGATE Upper Trip Threshold
CC
Undervoltage Lockout
capacitor from DH to LX to simulate external MOSFET gate capacitance. Actual in-circuit times may be different due to
MOSFET switching speeds.
PARAMETER
Step-Down Controller for Notebook CPUs
_______________________________________________________________________________________
Dynamically Adjustable, Synchronous
CC
DD
CC
DD
CC
)
)
)
)
= V
Measured at V
Measured at V
SKP/SDN = 0
SKP/SDN = 0
SKP/SDN = 0, V
V
Measured at FB
With respect to unloaded output voltage
GND - LX, ILIM = V
GND - LX
LX - GND, ILIM = V
Rising edge, hysteresis = 20mV, PWM disabled below this
level
BST - LX forced to 5V
DL, high state (pull up)
DL, low state (pull down)
D0–D4, A/B
D0–D4, A/B
D0–D4, 0 to 0.4V or 2.6V to 5.5V applied through resistor,
A/B = GND
D0–D4, 0 to 0.4V or 2.6V to 5.5V applied through resistor,
A/B = GND
Measured at FB with respect to unloaded output voltage,
falling edge, hysteresis = 1%
Measured at FB with respect to unloaded output voltage,
rising edge, hysteresis = 1%
CC
DD
= 4.5V to 5.5V, no REF load
= SKP/SDN = +5V, V
CC
DD
CC
, FB forced above the regulation point
, FB forced above the regulation point
CC
CC
= V
CONDITIONS
DD
OUT
= 0 or 5V
ILIM = 0.5V
ILIM = REF (2V)
=1.6V, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 3)
1.98
2.20
-140
MIN
+10
160
100
-8.4
4.1
2.4
65
80
33
TYP
MAX
1200
2.02
2.30
-4.6
+15
115
240
-80
4.4
3.5
3.5
1.0
0.8
40
75
65
5
5
5
5
1
UNITS
mV
mV
mV
kΩ
kΩ
µA
µA
µA
µA
µA
µA
%
%
%
Ω
Ω
Ω
V
V
V
V
V
5