LV5027M-TLM-H ON Semiconductor, LV5027M-TLM-H Datasheet - Page 10

• Manufacturer Part Number: LV5027M-TLM-H
• Description: LED Lighting Drivers LED DRIVER IC
• Manufacturer: ON Semiconductor

Specifications of LV5027M-TLM-H

• Rohs: yes
• Input Voltage: - 0.3 V to + 42 V
• Maximum Supply Current: 3 A
• Maximum Operating Temperature: + 125 C
• Package / Case: MFP-10S
• Minimum Operating Temperature: - 30 C
• Power Dissipation: 1 W

Description of operating protection function
1.UVLO(Under Voltage Lock Out)
of the IC is about 80uA or lower. If VIN voltage is 9V or higher, then the IC starts switching operation.
2.OCP(Over Current Protection)
additional level of protection in the event of a fault. If the voltage of the CS pin exceeds VCSOCP(1.9Vtyp)(A), the
iternal comparator will detect the event and turn off the MOSFET. The peak switch current is calculated
disconnects LED from VAC and lets the VIN falls below the VIN reset voltage,UVLOOFF(7.3Vtyp)(B). Then VIN rise
UVLOON(9Vtyp)(C),restart the switching.
The CS pin sense the current through the MOS FET switch and the primary side of the transformer.This provides an
Io(peak) [A] = VSOCP[V]/Rsense[ohm]
The VIN pin is pulled down to fixed level, keeping the controller lached off.The lach reset occurs when the user
If VIN voltage is 7.3V or lower, then UVLO operates and the IC stops. When UVLO operates, the power supply current
UVLOON
(9Vtyp)
UVLOOFF
tyop
(7.3Vtyp)
tyop
outputstage
outputstage
1
2
3
4
VIN
voltage
CS
voltage
VIN
voltage
tyop
tilte
UVLO
OCP
OVP
OTP
(TSD)
CSOCP(1.9Vtyp)
on
on
outline
Under Voltage Lock Out
Over Current Protection
Over Voltage Protection
Over Temperature Protection
(Thermal Shut Down))
A
A
B
OCP rerset
off
off
C
B
on
on
VCC
voltage
LV5027M
VCC
voltage
time
9Vtyp
7.3Vtyp
monitor point
VIN voltage
CS voltage
VIN voltage
PN Junction temperature
time
time
2dd
2dd
ＶＣＣ
ＶＣＣ
30k
30k
ＧＮＤ
ＧＮＤ
CSOFT*
CSOFT*
note
equivalent FET current
VREG
(内部定電圧)
VREG
(内部定電圧)
PS No.A1950-10/12
30k
30k