MAX8794 Maxim Integrated Products, MAX8794 Datasheet - Page 3

• Manufacturer Part Number: MAX8794
• Description: Low-Voltage DDR Linear Regulator
• Manufacturer: Maxim Integrated Products

ELECTRICAL CHARACTERISTICS (continued)
(V
Typical values are at T
Note 1: Limits are 100% production tested at T
REFERENCE
REFIN Voltage Range
REFIN Input Bias Current
REFIN Undervoltage-Lockout
Voltage
REFOUT Voltage
REFOUT Load Regulation
FAULT DETECTION
Thermal-Shutdown Threshold
V
Threshold
IN Undervoltage-Lockout
Threshold
Current-Limit Threshold
Soft-Start Current-Limit Time
INPUTS AND OUTPUTS
PGOOD Lower Trip Threshold
PGOOD Upper Trip Threshold
PGOOD Propagation Delay
PGOOD Startup Delay
PGOOD Output Low Voltage
PGOOD Leakage Current
SHDN Logic Input Threshold
SHDN Logic Input Current
IN
CC
= 1.8V, V
Undervoltage-Lockout
relation using statistical-quality-control (SQC) methods.
PARAMETER
CC
= 3.3V, V
_______________________________________________________________________________________
A
= +25°C.) (Note 1)
REFIN
= V
∆V
SYMBOL
Low-Voltage DDR Linear Regulator
V
OUTS
t
I
V
T
V
PGOOD
PGOOD
I
REFOUT
I
REFIN
REFOUT
SHDN
LIMIT
REFIN
UVLO
t
SS
= 1.25V, SHDN = V
A
= +25°C. Limits over the operating temperature range are guaranteed through cor-
Rising edge, hysteresis = 75mV
V
I
Rising edge, hysteresis = 15°C
Rising edge, hysteresis = 100mV
Rising edge, hysteresis = 55mV
With respect to feedback threshold,
hysteresis = 12mV
With respect to feedback threshold,
hysteresis = 12mV
OUTS forced 25mV beyond PGOOD trip
threshold
Startup rising edge, OUTS within ±100mV of
the feedback threshold
I
OUTS = REFIN (PGOOD high impedance),
PGOOD = V
Logic high
Logic low
SHDN = V
REFOUT
SINK
CC
= 3.3V, I
= 4mA
= ±5mA
CC
CC
REFOUT
CC
or GND
CONDITIONS
+ 0.3V
, circuit of Figure 1, T
= 0
A
= -40°C to +85°C, unless otherwise noted.
V
- 0.01
2.45
-200
MIN
REFIN
100
0.5
-20
1.8
0.8
-1
-1
5
V
+165
TYP
0.35
2.55
-150
REFIN
200
150
0.9
10
3
2
V
+ 0.01
MAX
0.45
2.65
-100
REFIN
+20
200
1.5
1.1
4.2
3.5
0.3
2.0
+1
+1
35
1
UNITS
mV
mV
ms
µA
mV
µA
µA
°C
µs
µs
A
V
V
V
V
V
V
V
3