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HM1483 Datasheet(PDF) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

Part # HM1483
Description  30V, 3.1A Monolithic Step-Down Switching Regulator in TSOT23-8
PDF  14 Pages
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Manufacturer  HMSEMI [Shenzhen Huazhimei Semiconductor Co., Ltd]
Direct Link  http://www.hmsemi.com/
Logo HMSEMI - Shenzhen Huazhimei Semiconductor Co., Ltd

HM1483 Datasheet(HTML) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

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7.5 Electrical Characteristics (Typical at Vin = 12V, TJ=25°C , unless otherwise noted.)
Note:
4) Guaranteed by design, not tested in production.
SYMBOL
PARAMETER
CONDITION
MIN
TYP
MAX
UNIT
BUCK CONVERTER
MOSFET
Ileak_sw
High-Side Switch Leakage Current
VEN = 0V, VSW= 0V
0
10
µA
RDS(ON)_H
High-Side Switch On-Resistance
IOUT = 1A, VOUT = 3.3V
65
mΩ
RDS(ON)_L
Low-Side Switch On-Resistance
IOUT = 1A, VOUT = 3.3V
45
mΩ
SUPPLY VOLTAGE (VIN)
VUVLO_up
Minimum input voltage for startup
6.5
V
VUVLO_down
6.0
V
VUVLO_hys
0.5
V
IQ-NONSW
Operating quiescent current
VFB =1.1V
1
mA
CONTROL LOOP
Foscb
Buck oscillator frequency
300
kHz
VFB
Feedback Voltage
6.5V ≤ VIN ≤ 30V
0.9
V
VFB_OVP
Feedback Over-voltage Threshold
0.99
V
Dmax
Maximum Duty Cycle(Note 4)
94
%
Ton
Minimum On Time(Note 4)
100
ns
PROTECTION
Iocl_hs
Upper Switch Current Limit
Minimum Duty Cycle
5.9
A
Iocl_ls
Lower Switch Current Limit
From Drain to Source
5.5
A
Vinovp
Input Over voltage protection
33
V
Thsd
Thermal Shutdown(Note 4)
155
°C
Thsdhys
Thermal Shutdown Hysteresis(Note 4)
15
°C
VIH
EN High Voltage
1.2
V
VIL
EN Low Voltage
1.1
V
IEN
EN Input Current
1.5
uA
Ichg_ss
Soft-Start Charge Current
2.3
uA
Icmp_src
Comp Source Current
VFB = 1.0 V
5.5
uA
Icmp_snk
Comp Sink Current
VFB = 0.8 V
3.6
uA
HM1483



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