Electrical characteristics (continued) – Rainbow Electronics MAX17008 User Manual
Page 4
MAX17007A/MAX17008
Dual and Combinable QPWM Graphics
Core Controllers for Notebook Computers
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 12V, V
DD
= V
CC
= V
EN1
= V
EN2
= 5V, V
REFIN1
= 2V, SKIP = GND, T
A
= 0 to +85°C, unless otherwise noted. Typical values are
at T
A
= +25°C.)
PARAMETER SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
CURRENT LIMIT
CSH1, CSH2
0
2.3
Current-Sense Input Range
CSL1, CSL2
0
2.3
V
Current-Sense Input (CSH_)
Leakage Current
CSH_ = GND or V
CC
, T
A
= +25°C
-0.2
+0.2
μA
Current-Sense Input (CSL_)
Leakage Current
CSL_= CSL_ = 2V, T
A
= +25°C
1
μA
T
A
= +25°C
28
30
32
V
CSH_
- V
CSL_
ILIM1 = ILIM2 = REF T
A
= 0°C to +85°C
27
30
33
V
CSH_
- V
CSL_
, ILIM1 = ILIM2 = V
CC
56 60 64
V
CSH_
- V
CSL_
, ILIM1 = ILIM2 = OPEN
42
45
48
Current-Limit Threshold (Fixed)
V
CSLIMIT
V
CSH_
- V
CSL_,
ILIM1 = ILIM2 = GND
13
15
17
mV
Current-Limit Threshold
(Negative)
V
NEG
V
CSH_
- V
CSL_
,
SKIP = V
CC
-1.2 x
V
CSLIMIT
mV
Current-Limit Threshold
(Zero Crossing)
V
ZX
V
CSH_
- V
CSL_
,
SKIP = GND or OPEN;
ILIM1 = ILIM2 = REF
1 mV
Ultrasonic Frequency
SKIP = open (3.3V); V
CSL1
= V
REFIN1
+ 50mV;
V
CSL2
= V
FB2
+ 50mV
20 kHz
V
CSL1
= V
REF1
+ 50mV
22
33
46
Ultrasonic Current-Limit
Threshold
SKIP = open (3.3V)
V
CSL2
= V
FB2
+
50mV 18 30 46
mV
Current-Balance Amplifier (GMI)
Offset
[V(CSH1,CSL1) - V(CSH2,CSL2)] at I
CCI
= 0
-3
+3
mV
Current-Balance Amplifier (GMI)
Transconductance
I
CCI
/
[V(CSH1,CSL1) - V(CSH2,CSL2)];
V
CCI
= V
CSL1
= V
CSL2
= 0.5V to 2V, and
V(CSH_,CSL_) = -60.0mV to +60.0mV,
ILIM1 = GND
180 μS
GATE DRIVERS
Low state (pulldown)
1.7
4.0
DH1, DH2 Gate-Driver
On-Resistance
R
ON(DH)
BST_ - LX_ forced
to 5V
High state (pullup)
1.7
4.0
High state (pullup)
1.3
3.0
DL1, DL2 Gate-Driver
On-Resistance
R
ON(DL)
Low state (pulldown)
0.6
2.5
DH1, DH2 Gate-Driver
Source/Sink Current
I
DH
DH_ forced to 2.5V, BST_ - LX_ forced to
5V
1.2
A
DL1, DL2 Gate-Driver
Source Current
I
DL(SOURCE)
DL_ forced to 2.5V
1
A
DL1, DL2 Gate-Driver
Sink Current
I
DL(SINK)
DL_ forced to 2.5V
2.4
A
DH_ low to DL high
10
25
40
Driver Propagation Delay
DL_ low to DH high
15
30
45
ns