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33394 Datasheet(PDF) 5 Page - Freescale Semiconductor, Inc

Part No. 33394
Description  Switch Mode Power Supply with Multiple Linear Regulators and High Speed CAN Transcelver
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Maker  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
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33394 Datasheet(HTML) 5 Page - Freescale Semiconductor, Inc

 
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33394
5
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
PIN FUNCTION DESCRIPTION (54 SOICW–EP Package)
PIN NO.
NAME
DESCRIPTION
1
GND
Ground
2
CANL
CAN differential bus drive low line
3
CANH
CAN differential bus drive high line
4
HRT
Hardware Reset Timer pin (programmed with external capacitor and resistor)
5
/SLEEP
Sleep Mode & Power Down control
6
N/C
No Connect
7
CS
SPI chip select
8
DI
SPI serial data in
9
SCLK
SPI clock input
10
DO
SPI serial data out
11
N/C
No Connect
12
VREF3
VDDH tracking linear regulator 3
13
VREF2
VDDH tracking linear regulator 2
14
VDDH
5.0 V regulated supply output
15
VPRE_S
Switching pre–regulator output sense
16
VPRE
Switching pre–regulator output
17
VCOMP
Switching pre–regulator compensation (error amplifier output)
18
INV
Switching pre–regulator error amplifier inverting input
19
GND
Ground
20
SW2G
External power switch (MOSFET) gate drive — Boost regulator
21
BOOT
Bootstrap capacitor
23
SW1
Source of the internal power switch (n–channel MOSFET)
24
SW1
Source of the internal power switch (n–channel MOSFET)
25
SW1
Source of the internal power switch (n–channel MOSFET)
26
SW1
Source of the internal power switch (n–channel MOSFET)
27
SW1
Source of the internal power switch (n–channel MOSFET)
28
VBAT
Battery supply to IC (external reverse battery protection needed in some applications)
29
VBAT
Battery supply to IC (external reverse battery protection needed in some applications)
30
VBAT
Battery supply to IC (external reverse battery protection needed in some applications)
31
VBAT
Battery supply to IC (external reverse battery protection needed in some applications)
32
VBAT
Battery supply to IC (external reverse battery protection needed in some applications)
33
KA_VBAT
Keep alive supply (with internal protection diode)
34
N/C
No Connect
35
VIGN
Turn–On control through ignition switch (with internal protection diode)
36
VKAM
VDDL tracking Keep Alive Memory (Standby) supply
37
VKAM_FB
VKAM output feedback
38
VSEN
Switched battery output
39
REGON
Regulator “Hold On” input
40
WAKEUP
CAN wake up event output
41
VREF1
VDDH tracking linear regulator 1
42
VPP_EN
VPP enable
43
VPP
5.0 V/ 3.3 V FLASH memory programming supply, tracking VDDH/VDD3_3
44
VDD3_3
3.3 V regulated supply output, base drive for optional external pass transistor
45
VDD3_3FB
VDD3_3 output feedback
46
VDDL_X
VDDL optional external pass transistor base drive, operating in Boost Mode only
47
VDDL_B
VDDL external pass transistor base drive
48
VDDL_FB
VDDL output feedback
49
N/C
No Connect
50
/PRERESET
Open drain /PRERESET output, occurs 0.7 us prior to /HRESET (Hardware Reset)
51
/HRESET
Open drain / HRESET (Hardware Reset) output
52
/PORESET
Open drain / PORESET (Power On Reset) supervising VKAM supply to the microprocessor.
53
CANRXD
CAN receive data (DOUT)
54
CANTXD
CAN transmit data (DIN)
NOTE: The exposed pad of the 54 SOICW–EP package is electrically and thermally connected with the IC ground.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com


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