L9826 STMicroelectronics, L9826 Datasheet - Page 16

• Manufacturer Part Number: L9826
• Description: IC DRIVER OCTAL LOW SIDE SOIC-20
• Manufacturer: STMicroelectronics
• Type: Low Sider

Specifications of L9826

• Input Type: SPI
• Number Of Outputs: 8
• On-state Resistance: 1.5 Ohm
• Current - Peak Output: 1.1A
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Supply Voltage (min): 4.5 V
• Supply Current: 5 mA
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Number Of Drivers: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Functional description
5.4
5.4.1
5.4.2
5.4.3
16/19
Protections
Flyback current
Turning off the low side driver with an inductive load, its output voltage rises due to the
inductor that tries to drive current. This voltage is internally clamped by the flyback circuit at
V
Current regulation mode outputs 1 and 2
Outputs 1 and 2 which are particularly dedicated for loads with inrush current (as lamps).
When the channel is switched on and the current through the load exceeds the short circuit
limit value (
mode.
The output current is determinated by the output characteristic and its voltage depends on
load resistance. In this mode, high power is dissipated in the output stage and its
temperature increases rapidly. When the output stage temperature exceeds the thermal
shutdown (T
Short circuits outputs 3 to 8
Outputs 3 to 8 which are dedicated for loads without inrush currents. When the output
current exceeds the short circuit threshold (I
output is switched-off immediately and in the same time, the relative latch store the overload
status.
CPL
value, typical 50V
Ilim
JSC
) for at least t
), the overload latch is set and the corresponding output is switched off.
df
time, the corresponding output goes in current regulation
Doc ID 7214 Rev 9
sbc
) for at least T
scb
time, the corresponding
L9826