AMIS-30521 Datasheet, PDF (5/26 Pages) AMI SEMICONDUCTOR – Micro-stepping Motor Driver

AMIS-30521 Micro-stepping Motor Driver
Data Sheet
6.3 DC Parameters
The DC parameters are given for V_BB and temperature in their operating ranges unless otherwise specified. Convention: currents
flowing in the circuit are defined as positive.
Table 5: DC Parameters
Symbol
Pin(s) Parameter
Remark/Test Conditions
Supply Inputs
V_BB
VBB ^{Nominal operating supply range}
I_bat
Total current consumption
Unloaded outputs
V_dd
VDD Logic supply voltage
Power-on-Reset (POR)
V_DDH
V_DDL
VDD
Internal POR comparator threshold
Internal POR comparator threshold
VDD rising
VDD falling
Motordriver
I_MDmax,Peak
Max current through motor coil in
normal operation
I_MDmax,RMS
Max RMS current through coil in normal
operation
I_MDabs
Absolute error on coil current
I_MDrel
Error on current ratio I_coilx / I_coily
R_HS
On-resistance high-side driver,
MOTXP CUR[4:0] = 0...31
V_bb = 12V, T_j = 27 °C
V_bb = 12V, T_j = 160 °C
R_LS3
MOTXN _{On-resistance low-side driver,}
MOTYP _{CUR[4:0] = 23...31}
MOTYN
V_bb = 12V, T_j = 27 °C
V_bb = 12V, T_j = 160 °C
R_LS2
On-resistance low-side driver,
CUR[4:0] = 16...22
V_bb = 12V, T_j = 27 °C
V_bb = 12V, T_j = 160 °C
R_LS1
On-resistance low-side driver,
CUR[4:0] = 9...15
V_bb = 12V, T_j = 27 °C
V_bb = 12V, T_j = 160 °C
R_LS0
On-resistance low-side driver,
CUR[4:0] = 0...8
V_bb = 12V, T_j = 27 °C
V_bb = 12V, T_j = 160 °C
I_Mpd
Pull-down current
HiZ mode
Logic Inputs
I_leak
DI, CLK Input leakage ⁽³⁾
Tj = 160 °C
V_inL
NXT, DIR Logic low threshold
V_inH
CLR, CSB _{Logic high threshold}
R_pd
CLR
TST0
Internal pull-down resistor
Thermal Warning and Shutdown
T_tw
T ^{(1) (2)}
tsd
Thermal warning
Thermal shutdown
Charge Pump
V_cp
VCP ^{Output voltage}
6V< V_BB < 15V
15V < V_BB < 30V
C_buffer
External buffer capacitor
C_pump
CPP CPN External pump capacitor
Min.
6
4.75
4.0
Typ.
5
4.25
3.68
Max.
Unit
30
V
8
mA
5.25
V
4.4
V
V
1600
mA
800
mA
-10
10
%
-7
7
%
0.45
0.56
Ω
0.94
1.25
Ω
0.45
0.56
Ω
0.94
1.25
Ω
0.90
1.2
Ω
1.9
2.5
Ω
1.8
2.3
Ω
3.8
5.0
Ω
3.6
4.5
Ω
7.5
10
Ω
0.5
mA
1
µA
1.5
V
3.5
V
120
300
kΩ
138
145
152
°C
T_tw + 20
°C
2 * V_BB – 2.5
V
V_BB+12.5
V_BB+14
V_BB+15.5
V
180
220
470
nF
180
220
470
nF
Notes:
(1) No more than 100 cumulated hours in life time above Tt_w.
(2) Thermal shutdown and low temperature warning are derived from thermal warning.
(3) Not valid for pins with internal pull-down resistor.
AMI Semiconductor – June 2007, M-20683-001
5
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