Electrical characteristics – Rainbow Electronics MAX17000 User Manual
Page 6
MAX17000
Complete DDR2 and DDR3 Memory
Power-Management Solution
6
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS
(V
IN
= 12V, V
CC
= V
DD
= V
SHDN
= V
REFIN
= 5V, V
CSL
= 1.8V, STDBY = SKIP = AGND, T
A
= -40°C to +85°C, unless otherwise noted.)
(Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX
UNITS
PWM CONTROLLER
V
IN
3
26
Input Voltage Range
V
CC
, V
DD
4.5
5.5
V
FB = AGND
1.485
1.520
FB = V
CC
1.782
1.820
Output Voltage Accuracy
V
CSL
V
IN
= 4.5V to 26V,
SKIP = V
CC
FB = Adj
0.990
1.020
V
R
TON
= 96.75k
Ω
(600kHz), 167ns
nominal
-15
+15
R
TON
= 200k
Ω
(300kHz), 333ns
nominal
-10
+10
On-Time Accuracy (Note 2)
t
ON
V
IN
= 12V,
V
CSL
= 1.2V
R
TON
= 303.25k
Ω
(200kHz), 500ns
nominal
-15
+15
%
Minimum Off-Time
t
OFF(MIN)
(Note 2)
350
ns
FB forced above 1.0V (PWM, VTT, and
VTTR blocks);
STDBY = V
CC
4
mA
Quiescent Supply Current (V
CC
)
I
CC
FB forced above 1.0V (ultra-skip and
VTTR blocks);
STDBY = AGND
475
μA
LINEAR REGULATOR (VTT)
VTTI Input Voltage Range
V
VTTI
1.0
2.8
V
VTTI Supply Current
I
VTTI
VTTI = 2.8V, REFIN = 1.4V, no load
50
μA
REFIN Range
V
REFIN
0.5
1.5
V
REFIN Disable Threshold
V
CC
-
0.3
V
H i g h- si d e on- r esi stance ( sour ce, I
V T T
= 0.1A)
0.25
VTT Internal MOSFET
Low-side on-resistance (sink, I
VTT
= 0.1A)
0.36
Ω
VTT Load Regulation
-50μA to -1A ≤ I
VTT
≤ +50μA to +1A
17
mV/A