33988 Datasheet, PDF (2/34 Pages) Freescale Semiconductor, Inc – Dual Intelligent High-current Self-protected Silicon High Side Switch (8.0mΩ)

INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
CS
SO
SI
SCLK
FS
IN[0:1]
RST
WAKE
FSI
VDD
VPWR
V_IC
I_UP
Internal
Regulator
Over-voltage
Protection
SPI
3.0 MHz
Logic
I_DWN
R_DWN
Programmable
Switch Delay
0ms –525ms
Selectable Slew
Rate Gate Drive
Selectable Over-current
High Detection
50A or 37.5A
Selectable Over-
current Low Detection
Blanking Time
0.15ms – 155ms
Over-temperature
Detection
Selectable Over-current
Low Detection
3.75A –12.5A
Open Load
Detection
HS0
HS0
Programmable
Watchdog
310ms – 2500ms
V_IC
I_UP
HS1
HS1
Selectable
Output Current
Recopy
1/10250 or 1/20500
GND
Figure 2. 33988 Simplified Internal Block Diagram
CSNS
33988
2
Analog Integrated Circuit Device Data
Freescale Semiconductor