MAX798 Maxim, MAX798 Datasheet - Page 3

• Manufacturer Part Number: MAX798
• Description: High-Accuracy Step-Down Controller with Synchronous Rectifier for CPU Power
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V+ = +15V, GND = PGND = 0V, I
Oscillator Frequency
SYNC High Pulse Width
SYNC Low Pulse Width
SYNC Rise/Fall Time
Oscillator Sync Range
Maximum Duty Cycle
Input High Voltage
Input Low Voltage
Input Current
DL Sink/Source Current
DH Sink/Source Current
DL On-Resistance
DH On-Resistance
PARAMETER
with Synchronous Rectifier for CPU Power
_______________________________________________________________________________________
High-Accuracy Step-Down Controller
VL
SYNC = REF
SYNC = 0V or 5V
Guaranteed by design
SYNC = REF
SYNC = 0V or 5V
SYNC
SHDN, SKIP
SYNC
SHDN, SKIP
SHDN, 0V or 30V
SYNC, SKIP
CSH, CSL, CSH = CSL = 4V, device not shut down
FB, FB = 1.6V
DL forced to 2V
DH forced to 2V, BST - LX = 4.5V
High or low
High or low, BST - LX = 4.5V
= I
REF
= 0A, T
A
= 0°C to +85°C, unless otherwise noted.)
CONDITIONS
VL - 0.5
MIN
270
125
200
200
195
2.0
89
93
TYP
300
150
91
96
1
1
±100
MAX
330
175
200
340
0.8
0.5
50
2
1
7
7
UNITS
kHz
kHz
µA
µA
nA
ns
ns
ns
%
Ω
Ω
V
V
A
A
3