Data Sheet

MP6500 – 35V, 2.5A, STEP MOTOR DRIVER W/ INTERNAL CURRENT SENSE
MP6500 Rev. 1.0 www.MonolithicPower.com 4
6/22/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 24V, T
A
= +25°C, unless otherwise noted.
Parameter
Symbol
Condition
Min
Typ
Max
Units
Power Supply
Input supply voltage
V
IN
4.5
24
35
V
Quiescent current
I
Q
VIN = 24V, nENBL = 0,
nSLEEP = 1, with no load
1.5
5
mA
I
SLEEP
VIN = 24V, nSLEEP = 0
1
µA
Internal MOSFETs
Output on resistance
R
HS
VIN = 24V, I
OUT
= 1A,
T
J
= 25°C
0.195
0.22
Ω
VIN = 24V, I
OUT
= 1A,
T
J
= 85°C
0.25
Ω
R
LS
VIN = 24V, I
OUT
= 1A,
T
J
= 25°C
0.17
0.21
Ω
VIN = 24V, I
OUT
= 1A,
T
J
= 85°C
0.25
Ω
Body diode forward voltage
V
F
I
OUT
= 1.5A
1.1
V
Control Logic
Input logic low threshold
V
IL
0.8
V
Input logic high threshold
V
IH
2.1
V
Logic input current
I
IN(H)
V
IH
= 5V
20
µA
I
IN(L)
V
IL
= 0.8V
5
µA
Internal pull-down resistance
R
PD
500
kΩ
Home nFAULT Outputs (Open-Drain Outputs)
Output low voltage
V
OL
I
O
= 5mA
0.5
V
Output high leakage current
I
OH
V
O
= 3.3V
1
µA
Protection Circuit
UVLO rising threshold
V
IN_RISE
3.4
4.5
V
Input OVP threshold
V
OVP
36
37.5
38.5
V
Input OVP hysteresis
∆V
OVP
1900
mV
Over-current trip level
I
OCP1
Sinking
3.5
6
8.5
A
I
OCP2
Sourcing
3.5
6
8.5
A
Over-current deglitch time
t
OCP
1
µs
Thermal shutdown
T
TSD
165
°C
Thermal shutdown hysteresis
∆T
TSD
15
°C
Current Regulation
Constant off time
t
OFF
R
osc
= 200kΩ
20
23
26
µs
Peak current regulation level
I
PEAK
R
ISET
= 78kΩ
0.95
1.0
1.05
A
ISET voltage
V
ISET
0.8
0.9
1
V
ISET current ratio
A
ISET
I
ISET
/I
OUT
10
11.539
13
µA/A
Blanking time
t
BLANK
2
µs
Current trip accuracy
∆I
TRIP
R
ISET
= 78kΩ, 71% - 100%
-5
5
%
R
ISET
= 78kΩ, 38% - 67%
-9
9
%
R
ISET
= 78kΩ, <34%
-12
12
%