Electrical characteristics (continued), Electrical characteristics – Rainbow Electronics MAX1636 User Manual
Page 4
MAX1636
Low-Voltage, Precision Step-Down
Controller for Portable CPU Power
4
_______________________________________________________________________________________
Gate-driver supply rail
Input source for VL regulator
V
CC
= 3.3V, VL = 5V
V
CC
= VL = 5V
Internal chip supply rail
FB tied to V
OUT
, 0mV < (CSH - CSL) < 80mV, 4.5V
< V+ < 30V (includes line and load regulation)
FB tied to V
CC
, 0mV < (CSH - CSL) < 80mV, 4.5V
< V+ < 30V (includes line and load regulation)
FB tied to GND, 0mV < (CSH - CSL) < 80mV, 4.5V
< V+ < 30V (includes line and load regulation)
CONDITIONS
V
4.2
5.5
Input Voltage Range, VL
V
4.5
30
Input Voltage Range, V+
V
REF
3.6
V
V
REF
5.5
Output Adjustment Range
V
3.15
5.5
Input Voltage Range, V
CC
V
1.086
1.114
Output Voltage, Adj Mode
V
2.432
2.635
Output Voltage, Fixed 2.5V Mode
V
3.195 3.497
Output Voltage, Fixed 3.3V Mode
UNITS
MIN
TYP
MAX
PARAMETER
High or low, DH or DL
DH or DL forced to 2V
CSH = CSL = 5V, V+ = VL = V
CC
=
GND, either CSH or CSL input
CONDITIONS
Ω
7
Gate-Driver On-Resistance
A
1
Gate-Driver Sink/Source Current
µA
10
Current-Sense Input
Leakage Current
UNITS
MIN
TYP
MAX
PARAMETER
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V+ = 15V, SYNC = VL = V
CC
, I
VL
= 0mA, I
REF
= 0mA, T
A
= 0°C to +85°C, unless otherwise noted. Typical values
are at T
A
= +25°C.)
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V+ = 15V, SYNC = VL = V
CC
, I
VL
= 0mA, I
REF
= 0mA, T
A
=-40°C to +85°C, unless otherwise noted.) (Note 1)
V
CC
= 5V, I(VL) = 0
µA
60
Regulator Supply Current (V+)
V
CC
= 5V, I(VL) = 0, V+ = 4.5V
(includes PNP base current)
SHDN = GND, OVP = V
CC
µA
60
Standby Supply Current (V+)
I(VL) = 0 to 25mA, 6V < V+ < 30V
V
4.7
5.3
I(VL) = 0 to 25mA, 5V < V+ < 30V
VL Output Voltage
Rising edge, hysteresis = 25mV
V
3.45
3.91
4.5
5.3
VL Undervoltage Lockout
Threshold
500
V
CC
= 5V, output not switching
Positive direction
2.0
mV
70
130
Current-Limit Threshold
V
CC
= 3.3V, output not switching
1.5
Power Consumption
mW
SMPS CONTROLLER
INTERNAL VL REGULATOR AND REFERENCE