Owner's manual

ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
IN
= 12V, V
DD
= V
CC
= 5V, SHDN = ILIM = V
CC
, SKIP = GNDS = PGND = GND, V
FB
= V
CSP
= V
CSN
= 1.05V;
G5–G0 set for 1.05V (G0–G5 = 100110); T
A
= 0°C to +85°C, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
THERMAL COMPARATOR AND PROTECTION
VRHOT Trip Threshold
Measured at THRM with respect to V
CC
;
falling edge; typical hysteresis = 100mV
29.2 30 30.8 %
VRHOT Delay t
VRHOT
THRM forced 25mV below the VRHOT trip
threshold; falling edge
10 µs
VRHOT Output On-Resistance R
VRHOT
Low state 2 8 
VRHOT Leakage Current I
VRHOT
High state, VRHOT forced to 5V, T
A
= +25°C 1 µA
THRM Input Leakage I
THRM
V
THRM
= 0 to 5V, T
A
= +25°C -100 +100 nA
Thermal-Shutdown Threshold T
SHDN
Typical hysteresis = 15°C 160 °C
VALLEY CURRENT LIMIT AND DROOP
V
REF
- V
ILIM
= 100mV 7 10 13
Current-Limit Threshold Voltage
(Positive Adjustable)
V
LIMIT
V
CSP
- V
CSN
V
REF
- V
ILIM
= 500mV 45 50 55
mV
Current-Limit Threshold Voltage
(Positive Default)
ILIM = V
CC
, V
CSP
- V
CSN
20 22.5 25 mV
Current-Limit Threshold Voltage
(Negative) Accuracy
V
LIMIT(NEG)
V
CSP
- V
CSN
, nominally -125% of V
LIMIT
-4 +4 mV
Current-Limit Threshold Voltage
(Zero Crossing)
V
ZERO
V
PGND
- V
LX
1 mV
CSP, CSN Common-Mode
Input Range
0 1.9 V
CSP, CSN Input Current T
A
= +25°C -0.2 +0.2 µA
ILIM Input Current T
A
= +25°C -100 +100 nA
Droop Amplifier (GMD) Offset (V
CSP
- V
CSN
) at I
FB
= 0 -0.75 +0.75 mV
Droop Amplifier (GMD)
Transconductance
I
FB
/(V
CSP
- V
CSN
);
FB = CSN = 0.45V to 2.0V,
and (V
CSP
- V
CSN
) = -15.0mV to +15.0mV
592 600 608 µS
GATE DRIVERS
High state (pullup) 0.9 2.5
DH Gate-Driver On-Resistance R
ON(DH)
BST - LX forced
to 5V
Low state (pulldown) 0.7 2.0

High state (pullup) 0.7 2.0
DL Gate-Driver On-Resistance R
ON(DL)
Low state (pulldown) 0.25 0.7

DH Gate-Driver Source Current I
DH(SOURCE)
DH forced to 2.5V, BST - LX forced to 5V 2.2 A
DH Gate-Driver Sink Current I
DH(SINK)
DH forced to 2.5V, BST - LX forced to 5V 2.7 A
DL Gate-Driver Source Current I
DL(SOURCE)
DL forced to 2.5V 2.7 A
DL Gate-Driver Sink Current I
DL(SINK)
DL forced to 2.5V 8 A
Internal BST Switch
On-Resistance
R
BST
I
BST
= 10mA, V
DD
= 5V 10 20 
MAX17409
1-Phase Quick-PWM GPU Controller
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