AMIS-39100 Datasheet, PDF (8/16 Pages) AMI SEMICONDUCTOR – Octal High Side Driver with Protection

AMIS-39100: Octal High Side Driver with Protection
Data Sheet
8.4 Load Specific Parameters
HS driver parameters for specific loads are specified in following categories:
A. Parameters for inductive loads up to 350mH and T_ambient up to 105°C
B. Parameters for inductive loads up to 300mH and T_ambient up to 105°C
C. Parameters for resistive loads and T_ambient up to 85°C
Table 8: Load Specific Characteristics
A. Inductive Load up to 350mH and T_ambient up to 105°C
Symbol
Description
Min.
Max. Unit
I_OUT_ON_max.
Maximum output per HS driver, all eight drivers might be active
240
mA
simultaneously
B. Inductive Load up to 300mH and T_ambient up to 105°C
I_OUT_ON_max.
Maximum output per HS driver, all eight drivers might be active
275
mA
simultaneously
C. Resistive Load and T_ambient up to 85°C
I_OUT_ON_max.
Maximum output per HS driver, all eight drivers might be active
350
mA
simultaneously
Maximum output per one HS driver, only one can be active
650
mA
Maximum output per HS driver, only two HS drivers from a different pair can
500
mA
be active simultaneously
Maximum output per one HS driver pair
830
mA
Note: The parameters above are not tested in production but are guaranteed by design.The overall current capability limitations need to be respected at all times.
The maximum current specified in Table 8 cannot always be obtained. The practically obtainable maximum drive current heavily
depends on the thermal design of the application PCB (see Section 8.2).
The available power in the package is: (TSD_H - T_ambient) / R_thja
With TSD_H = 130°C and R_thja according to Table 5.
8.5 Charge Pump
The HS drivers use floating NDMOS transistors as power devices. To provide the gate voltages for the NDMOS of the HS drivers, a
charge pump is integrated. The storage capacitor is an external one. The charge pump oscillator has typical frequency of 4MHz.
AMI Semiconductor – Jan. 07, M-20557-002
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