MAX797H Maxim, MAX797H Datasheet - Page 3

• Manufacturer Part Number: MAX797H
• Description: High-Voltage / Step-Down Controller with Synchronous Rectifier for CPU Power
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, GND = PGND = 0V, I VL = I REF = 0A, T
OSCILLATOR AND INPUTS/OUTPUTS
Reference Output Voltage
Reference Fault Lockout Voltage
Reference Load Regulation
CSL Shutdown Leakage Current
V+ Shutdown Current
V+ Off-State Leakage Current
Dropout Power Consumption
Quiescent Power Consumption
Oscillator Frequency
SYNC High Pulse Width
SYNC Low Pulse Width
SYNC Rise/Fall Time
Oscillator Sync Range
Maximum Duty Factor
Input High Voltage
Input Low Voltage
Input Current
DL Sink/Source Current
DH Sink/Source Current
DL On-Resistance
DH On-Resistance
PARAMETER
High-Voltage, Step-Down Controller with
_______________________________________________________________________________________
Synchronous Rectifier for CPU Power
No external load (Note 1)
Falling edge
0µA < I
SHDN = 0V, CSL = 6V, V+ = 0V or 30V, VL = 0V
SHDN = 0V, V+ = 30V, CSL = 0V or 6V
FB = CSH = CSL = 6V, VL switched over to CSL
V+ = 4V, CSL = 0V (Note 2)
CSH = CSL = 6V
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 = REF
DL forced to 2V
DH forced to 2V, BST - LX = 4.5V
High or low
High or low, BST - LX = 4.5V
REF
< 100µA
A
= 0°C to +85°C, SYNC = 0V, unless otherwise noted.)
CONDITIONS
VL - 0.5
2.45
MIN
270
125
200
200
190
1.8
2.0
89
93
2.505
TYP
300
150
0.1
4.8
91
96
1
1
4
1
1
±100
MAX
2.55
330
175
200
340
2.3
6.6
0.8
0.5
2.0
1.0
50
50
1
5
5
8
7
7
UNITS
mW
mW
kHz
kHz
mV
µA
µA
µA
µA
nA
ns
ns
ns
%
Ω
Ω
V
V
V
V
A
A
3