L9958SB STMicroelectronics, L9958SB Datasheet - Page 10

• Manufacturer Part Number: L9958SB
• Description: IC H-BRIDGE SPI POWERSO16
• Manufacturer: STMicroelectronics

Specifications of L9958SB

• Applications: DC Motor Driver, Brushless (BLDC)
• Number Of Outputs: 2
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: PowerSO-16 Exposed Bottom Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Device description
3
3.1
3.2
3.2.1
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Device description
Supply range
The L9958 has an operating supply range from "Vs_uv" (battery monitoring) up to 28 V.
However, the device is tested until 16 V; the functionality of the device is guaranteed until
28 V. The absolute maximum rating is defined to 40 V DC.
Control inputs
The bridge is controlled by the Inputs PWM, DIR, EN and DI.
All the digital inputs and outputs of the L9958 are compatible with 3.3 V and 5 V CMOS. The
power stages output OUT1 and OUT2 are controlled by the direct inputs DIR and PWM as
given in
controls whether the current is increased or reduced.
DI and EN inputs
The pin DI is internally pulled-up and high active. When DI is active (set to HIGH), the bridge
is set to tristate, whatever the state of the DIR and PWM inputs. All the data stored in SPI
registers are not reset and SPI communication with the MCU is still possible. When DI is
inactive (set to LOW), the bridge is controlled by the DIR and PWM inputs.
The pin EN is internally pulled down and high active. When EN is inactive (set to LOW), the
bridge is set to tri-state, whatever the state of the DIR and PWM inputs. All the data stored in
SPI registers are not reset and SPI communication with the MCU is still possible. When EN
is active (set to HIGH), the bridge is controlled by the DIR and PWM inputs. The coding is
performed as shown in the next table. The state of the bridge is transferred in the diagnostic
register in a bit called "ACT".
Table 5.
EN
Table
0
0
1
1
Control pins EN, DI
5. The DIR input gives the direction of output current, while the PWM input
DI
0
1
0
1
Doc ID 17269 Rev 2
Bit “ACT”
0
0
1
0
Bridge status
On-state
Tri-state
Tri-state
Tri-state
L9958