参数资料
型号: MC33394
厂商: 飞思卡尔半导体(中国)有限公司
元件分类: CAN
英文描述: Switch Mode Power Supply with Multiple Linear Regulators and High Speed CAN Transceiver(带有多个线性稳压器和高速CAN收发器的开关方式电源)
中文描述: 开关电源的多线性稳压器和高速CAN收发器(带有多个线性稳压器和高速的CAN收发器的开关方式电源)
文件页数: 2/44页
文件大小: 641K
代理商: MC33394
2
Go to: www.freescale.com
Figure 1. 33394DH – Simplified Block Diagram and Typical Application
CAN
Wakeup
Logic
Band Gap
Reference
Standby
Control
VREF1
5.0 V
100 mA
LDO
T–Lim I–Lim
VPP
5.0 V/3.3 V
150 mA
LDO
T–Lim I–Lim
VDD3_3
3.3 V
120 mA
LDO, Pass
T–Lim I–Lim
VDDL Drive
Adj. Volt.
40 mA
Dual Pass
T–Lim
Reset
Detection
VDDH,
VDD3_3,
VDDL
VDDH
5.0 V
400 mA
LDO
T–Lim I–Lim
VREF2
5.0 V
100 mA
LDO
T–Lim I–Lim
VREF3
5.0 V
100 mA
LDO
T–Lim I–Lim
16 Bit
SPI
Control
Fault Rep.
POR Timer
Sleep
21
22
23
24
25
High–Speed CAN
Transceiver
20
19
18
10 nF
47 F
10 nF
1.0 F
10 nF
1.0 F
10 nF
1.0 F
10 nF
47 F
VDD3_3
17
16
15
14
13
12
11
10
VSEN
VBAT Volt.
125 mA
T–Lim I–Lim
VKAM
Keep–Alive
Adj. Volt.
60 mA
I–Lim
GND
CANL
CANTXD
CANH
CANRXD
26
27
28
29
30
31
10 nF
10 nF
22 F
2.6 V
100 F
10 F
Buck
Control
Logic
Boost
VPRE
Q3
MJD31C
Q2
MJD31C
10 nF
47 F
10 nF
VDDH
5.0 V
CANRXD
42–44
41
BOOT
High–Side
Drive
Low–Side
Drive
Oscillator
Feed
Forward
Ramp
Generator
+
+
+
C1
100 F
Enable
Sleep
32
33
34
35
36
37
10 k
10 k
10 k
110R
100R
VDDL
2.6 V
3.3 V
47 F
VREF1
VPP_EN
VPP
VDD3_FB
VDDL_B
DO
SCLK
DI
CS
/SLEEP
VREF3
VREF2
VDDH
5.0 V
5.0 V
5.0 V
47 k
HRT
/PRERESET
/HRESET
/PORESET
VDDL_X
VDDL_FB
5.0 V
5.0 V/3.3 V
9
WAKEUP
8
REGON
7
VSEN
38
39
40
5
VKAM
6
VKAM_FB
4
VIGN
3
KA_VBAT
1, 2
VBAT
4.7 k
ON
OFF
Control
Dp2
Dp1
To Q3
Cf1
Cf2
Lf1
6.8 H
+
Vbg
11.7 k
40 k
Cc1
1.0 nF
D2
VPRE_S
VPRE
VCOMP
100 pF
INV
GND
SW2G
SW1
Cb
100 nF
D1
Q1
MTD20N03HDL
L1
47 H
Cc2
Rc2
100 k
Cc3
3.3 nF
Rc3
430R
VPRE
5.6 V
22 k
20 k
VQ3
VKAM
2.6 V
Vbg
Notes: 1. In this configuration the device can operate with a mnimuminput voltage VBAT of 4.0 V (voltage at 33394 VBAT pins).
Notes:
2.VDDL and VKAMare adjustable to support current mcroprocessor technology (1.25 V to 3.3 V) by means of an external resistor divider.
Notes:
3. When the 33394 CAN transceiver is not used, CANL and CANH pins can be shorted together.
Notes:
4. Dp1 = reverse battery protection diode. Dp2 = load dump protection diode. Dp1, Dp2 can be ommtted in those applications which do not require such protection.
For More Information On This Product,
120 R
1.0 F
F
Freescale Semiconductor, Inc.
n
.
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