MAX1636 Maxim, MAX1636 Datasheet - Page 3

• Manufacturer Part Number: MAX1636
• Description: Low-Voltage / Precision Step-Down Controller for Portable CPU Power
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V+ = 15V, SYNC = VL = V
are at T
Regulator Supply Current (V+)
OSCILLATOR
OVERVOLTAGE PROTECTION
INPUTS AND OUTPUTS
Standby Supply Current (V+)
VL Output Voltage
VL Undervoltage Lockout Threshold
VL/ V
REF Output Voltage
REF Load Regulation
REF Line Regulation
Oscillator Frequency
Maximum Duty Factor
Maximum Duty Factor, Dropout Mode
SYNC Input Pulse Width High
SYNC Input Pulse Width Low
SYNC Input Rise/Fall Time
SYNC Input Frequency Range
Overvoltage Trip Threshold
Overvoltage Fault Propagation Delay
Thermal Shutdown Threshold
Catastrophic Output Undervoltage
Lockout Threshold
Catastrophic Output Undervoltage
Lockout Delay
RESET Trip Threshold
RESET Delay Time
Logic Input Voltage High
Logic Input Voltage Low
Logic Input Bias Current
SHDN Input Bias Current
RESET Output Voltage Low
RESET Output Leakage Current
INTERNAL VL REGULATOR AND REFERENCE
CC
A
= +25°C.)
Switchover Threshold
PARAMETER
_______________________________________________________________________________________
Low-Voltage, Precision Step-Down
Controller for Portable CPU Power
V
V
(includes PNP base current)
SHDN = GND, OVP = V
I(VL) = 0 to 25mA, 5V < V+ < 30V
I(VL) = 0 to 25mA, 6V < V+ < 30V
Rising edge, hysteresis = 25mV
Rising edge, hysteresis = 25mV
No REF load
REF load = 0 to 50µA
V
SYNC = V
SYNC = GND
SYNC = V
SYNC = GND
SYNC = GND
Guaranteed by design
FB, with respect to regulation point
FB to DL delay, 22mV overdrive, C
Hysteresis = 10°C
% of nominal output
From shutdown or power-on-reset state
Falling edge (hysteresis = 1%)
SHDN, SKIP, OVP, SYNC
SHDN, SKIP, OVP, SYNC
Pin at GND or V
SHDN = GND or V+
I
+5.5V stress voltage applied
SINK
CC
CC
CC
CC
= 5V, I(VL) = 0
= 5V, I(VL) = 0, V+ = 4.5V
= 3.3V to 5.5V
= 4mA
, I
VL
CC
CC
= 0mA, I
CC
CONDITIONS
; SKIP, OVP, SYNC
REF
CC
= 0mA, T
A
GATE
= 0°C to +85°C, unless otherwise noted. Typical values
= 2000pF
1.090
3.45
MIN
270
170
200
200
240
4.5
4.7
2.4
91
93
98
60
-6
-1
-3
4
32768
1.100
6144
TYP
3.60
3.15
1.25
300
200
150
5.0
5.0
94
96
99
70
7
1.110
MAX
500
3.75
330
230
200
340
5.3
5.3
0.8
0.4
60
60
10
10
80
-3
3
1
3
1
UNITS
kHz
kHz
clks
clks
mV
mV
µA
µA
µA
µA
µA
ns
ns
ns
µs
°C
%
%
%
%
%
V
V
V
V
V
V
V
3