Rainbow Electronics MAX1813 - Manual (Page 4)

MAX1813
Dynamically-Adjustable, Synchronous Step-Down
Controller with Integrated Voltage Positioning
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ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V+ = +15V, V CC = V DD = 5V, VPCS = ZMODE = GND = PGND, SKP/SDN = CODE = V CC , V OUT set to 1.5V,
T A = 0 °C to +85°C, unless otherwise noted. Typical values are at T
A = +25 °C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
GATE DRIVERS
DH Gate Driver On-Resistance R ON (D H ) V BST - V LX forced to 5V 1.2 3.5 Ω
High state (pull up) 1.3 3.5
DL Gate Driver On-Resistance R ON(DL)
Low state (pull down) 0.4 1.0
Ω
DH Gate Driver Source/Sink
Current
I DH DH forced to 2.5V, V BST - V LX forced to 5V 2.0 A
DL Gate Driver Sink Current I DL DL forced to 5V 4.0 A
DL Gate Driver Source Current I DL DL forced to 2.5V 1.3 A
DL rising 35
Dead Time
DH rising 26
ns
LOGIC AND I/O
Logic Input High Voltage V IH
D0 −D4, CODE, SUS, ZMODE; V
CC = 4.5V
to 5.5V
2.4 V
Logic Input Low Voltage V IL
D0 −D4, CODE, SUS, ZMODE; V
CC = 4.5V
to 5.5V
0.8 V
DAC Z-Mode Programming
Resistor, Low
D0 −D4, 0 to 0.4V or 2.6V to 5.5V applied to
the resistor, ZMODE = CODE = GND or
ZMODE = CODE = V
CC
1.05 k Ω
DAC Z-Mode Programming
Resistor, High
D0 −D4, 0 to 0.4V or 2.6V to 5.5V applied to
the resistor, ZMODE = CODE = GND or
ZMODE = CODE = V
CC
95 k Ω
Pull up 40
D0 −D4, CODE Pull Up/Down
Entering impedance
mode
Pull down 8
k Ω
D0 −D4, CODE = V
CC -1 +1
Logic Input Current
SUS, ZMODE = GND or V CC -1 +1
µA
4-Level Logic Input High (V CC ) TON (200kHz operation), S0, S1
V CC -
0.4
V
4-Level Logic Input Upper-
Middle (Float)
TON (300kHz operation), S0, S1 2.8 3.85 V
4-Level Logic Input Lower-
Middle (REF)
TON (600kHz operation), S0, S1 1.65 2.35 V
4-Level Logic Low (GND) TON (1000kHz operation), S0, S1 0.5 V
SKP/SDN High Input Level
(Skip Mode)
2.8 6.0 V
SKP/SDN Float Input Level
(Forced-PWM Mode)
1.4 2.2 V
SKP/SDN Low Input Level
(Shutdown Mode)
0.5 V