UH457 Datasheet, PDF (3/6 Pages) Unisonic Technologies – SMART MOTOR DRIVER

UH457
Preliminary
CMOS IC
 ABSOLUTE MAXIMUM RATINGS (T_A=25°C, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
DC Supply Voltage(V_DD, FG)
V_DD
29
V
Output Voltage (NO, SO)
Supply Current
V_OUT
V_DD + 0.3
V
I_DD
5
mA
Continuous Current
Hold Current
I_CONT
300
mA
I_HOLD
800
mA
Peak current (< 100 μs)
Magnetic Flux Density
I_PEAK
B
1000
Unlimited
mA
Gauss
IR-Reflow Lead Temperature (10sec)
260
°C
Power Dissipation
P_D
1000
mW
Junction Temperature
Operation Junction Temperature
T_J
170
°C
T_OPR
-20 ~ +85
°C
Storage Temperature
T_STG
-55 ~ +150
°C
Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. Output Zener protection voltage.
 RECOMMENDED OPERATING COMDITIONS (T_A=25°C, unless otherwise specified)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
Supply Voltage
Operation Junction Temperature
V_DD
4.0
T_A
-40
28
V
85
°C
 THERMAL RESISTANCES CHARACTERISTICS
PARAMETER
Junction to Ambient
Junction to Case
SYMBOL
θ_JA
θ_JC
MIN
TYP
125
100
 ELECTRICAL CHARACTERISTICS (T_A=25°C, unless otherwise specified)
MAX
UNIT
°C/W
°C/W
PARAMETER
Average Supply Current
On resistance (R_PMOS+R_NMOS)
Thermal Shutdown Threshold
Locked Rotor Period
SYMBOL
TEST CONDITIONS
I_DD V_DD=24V, no load
R_ON
V_DD=5V
V_DD=24V
T_SD
T_ON
T_OFF
 MAGNETIC CHARACTERISTICS
MIN TYP MAX UNIT
2.5
mA
4.5
Ω
3.0
Ω
150
°C
1.1
s
7.5
s
Operate Point
Release Point
Hysteresis
PARAMETR
SYMBOL
B_OP
B_RP
B_HYS
MIN
5
-50
TYP
25
-25
50
MAX
50
-5
UNIT
G
G
G
 DRIVER OUTPUT VS. MAGNETIC POLE
North pole
South pole
PARAMETER
B < B_RP
B > B_OP
TEST CONDITIONS
NO
High
Low
SO
Low
High
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 6
QW-R118-020.a