MAX1519 Datasheet, PDF (8/43 Pages) Maxim Integrated Products – Dual-Phase, Quick-PWM Controllers for Programmable CPU Core Power Supplies

Dual-Phase, Quick-PWM Controllers for
Programmable CPU Core Power Supplies
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V+ = 15V, V_CC = V_DD = V_SHDN = V_TON = V_SKIP = V_S0 = V_S1 = V_CODE = 5V, V_FB = V_CMP = V_CMN = V_CSP = V_CSN
= 1.3V, OFS = SUS = GNDS = D0–D4 = GND; T_A = -40°C to +100°C, unless otherwise specified.) (Note 5)
PARAMETER
GATE DRIVERS
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
DH_ Gate-Driver On-Resistance
R_ON(DH)
DL_ Gate-Driver On-Resistance
R_ON(DL)
VOLTAGE-POSITIONING AMPLIFIER
BST_ - LX_ forced to 5V
High state (pullup)
Low start (pulldown)
4.5
Ω
4.5
Ω
2
Input Offset Voltage
Common-Mode Input Voltage
Range
Output Voltage Swing
LOGIC AND I/O
SHDN Input High Voltage
SHDN Input Low Voltage
Three-Level Input Logic Levels
V_OS
-2.0
V_CM
Guaranteed by CMRR test
0
|V_OAIN+ - V_OAIN-| ≥ 10mV, ^VCC ^{- V}FBH
R_L = 1kΩ to V_CC/2
V_FBL
V_IH
0.8
V_IL
High
2.7
SUS, SKIP
REF
1.2
+2.0
mV
2.5
V
300
mV
200
V
0.4
V
2.3
V
D0–D4 Logic Input High Voltage
D0–D4 Logic Input Low Voltage
CODE Input High Voltage
Low
0.8
1.6
V
0.8
V
2.4
V
CODE Input Low Voltage
Four-Level Input Logic Levels
TON, S0–S1
High
Open
REF
V_CC -
0.4
3.15
1.65
0.8
V
3.85
V
2.35
Low
0.4
Note 2: DC output accuracy specifications refer to the trip level of the error amplifier. When pulse skipping, the output slightly rises
(< 0.5%) when transitioning from continuous conduction to no load.
Note 3: On-time and minimum off-time specifications are measured from 50% to 50% at the DHM and DHS pins, with LX_ forced to
GND, BST_ forced to 5V, and a 500pF capacitor from DH_ to LX_ to simulate external MOSFET gate capacitance. Actual in-
circuit times may be different due to MOSFET switching speeds.
Note 4: The output fault-blanking time is measured from the time when FB reaches the regulation voltage set by the DAC code.
During normal operation (SUS = GND), regulation voltage is set by the VID DAC inputs (D0–D4). During suspend mode
(SUS = REF or high), the regulation voltage is set by the suspend DAC inputs (S0–S1).
Note 5: Specifications to T_A = -40°C and +100°C are guaranteed by design and are not production tested.
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