Electrical characteristics (continued) – Rainbow Electronics MAX17000 User Manual
Page 5
MAX17000
Complete DDR2 and DDR3 Memory
Power-Management Solution
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 12V, V
CC
= V
DD
= V
SHDN
= V
REFIN
= 5V, V
CSL
= 1.8V, STDBY = SKIP = AGND, T
A
= 0°C to +85°C, unless otherwise noted.
Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
CURRENT LIMIT
Valley Current-Limit Threshold
V
LIMIT
V
CSH
- V
CSL
17
20
25
mV
Current-Limit Threshold
(Negative)
V
NEG
V
CSH
- V
CSL
,
SKIP = V
CC
-23
mV
Current-Limit Threshold
(Zero Crossing)
V
ZX
V
CSH
- V
CSL
1
mV
SMPS GATE DRIVERS
DH Gate Driver On-Resistance
R
DH
BST - LX forced to 5V
1.5
5.0
Ω
DL high
1.5
5.0
DL Gate Driver On-Resistance
R
DL
DL low
0.6
3.0
Ω
DH Gate Driver Source/
Sink Current
I
DH
DH forced to 2.5V, BST - LX forced to 5V
1
A
I
DL(SRC)
DL forced to 2.5V
1
DL Gate Driver Source/
Sink Current
I
DL(SNK)
DL forced to 2.5V
3
A
DL rising, T
A
= +25°C
10
25
Dead Time
t
DEAD
DL falling, T
A
= +25°C
15
35
ns
Internal BST Switch
On-Resistance
R
BST
I
BST
= 10mA,
V
DD
= 5V internal design target
4.5
Ω
LX, BST Leakage Current
V
BST
= V
LX
= 26V,
SHDN = AGND,
T
A
= +25°C
0.001
20
μA
INPUTS AND OUTPUTS
Logic Input Threshold
SHDN, STDBY, SKIP, OVP, rising edge
hysteresis = 300mV/600mV (min/max)
1.30
1.65
2.00
V
Logic Input Current
SHDN, STDBY, SKIP = 0 or V
CC
,
T
A
= +25°C
-1
+1
μA
Input Leakage Current
CSH = 0 or V
CC
, T
A
= +25°C
-1
+1
μA
Input Bias Current
CSL = 0 or V
CC
55
100
μA