参数资料
型号: KIT33702DWBEVB
厂商: Freescale Semiconductor
文件页数: 34/39页
文件大小: 0K
描述: KIT FEATURES THE MC34701
标准包装: 1
主要目的: DC/DC,LDO 步降
输出及类型: 2,非隔离
输入电压: 2.8 ~ 6V
稳压器拓扑结构: 降压
频率 - 开关: 300kHz
板类型: 完全填充
已供物品: 板,软件
已用 IC / 零件: MC34702
相关产品: MC34702EKR2CT-ND - IC POWER SUPPLY MCU 3A 32-SOIC
MC34702EKR2TR-ND - IC POWER SUPPLY MCU 3A 32-SOIC
MC34702EK-ND - IC POWER SUPPLY MCU 3A 32-SOIC
TYPICAL APPLICATIONS
+3.3V
Supply
Voltage
C IN
10uF
VIN1
VBST
8.0V
VIN
VBST
VDDI
Internal
Supply
VDDI
VBST
VDDI
1.0 uF
C BST
10uF
7.75V
Vref
Power
Enable
LDRV
Q LDO
10uH
L BST
+3.3V
or
VBD
Q5
Boost
Control
Vref
Vref
VDDI
Bandgap
Voltage
Reference
VDDI
VDDI
Vref
Linear
Regulator
Control
I-lim
CS
LDO
LFB
R S
0.022 R
4.7k
1.5k
VLDO=3.3V
@1.0A
C LDO
5 x 2.2 uF
RST
to MCU
VLDO
5.1k
EN1
EN2
RESET
Q6
Reset
Control
Reset
Power
Sequencing
Voltage Margining
W-dog Timer
VLDO
Power
Down
VOUT
Pow. Seq.
UVLO
VBST
Q4
VBST
LCMP
100pF
BOOT
1.5k
6.8nF
VBST
Rt
100k
Ct
RT
100nF
ADDR
POR
Timer
I 2 C
Control
SysCon
INV
LFB
Thermal
Limit
I 2 C
Control
SysCon
SoftSt
Current
Limit
VDDI
Buck
Control
Logic
Buck
HS
&
LS
Driver
Q1
Q2
VIN2
(2)
C IN
2 x 22 uF
SW
(2)
C B
D B
0.1uF
+3.3V
Supply
Voltage
L1
4.7 uH
VOUT=1.8V
+
C O
R pd
10k
SDA
SCL
I 2 C
Interface
Switcher
Oscillator
300kHz
PWM
Comp.
+
-
Error
Amp.
+
-
0.8V
To Reset
Control
(2)
PGND
INV
300k
39k
100 uF
Ramp
Gen.
Pow.
VOUT
Q3
VOUT
27k
R b
300
470pF
Seq.
CLKSEL
CLKSYN
FREQ
(4)
GND
R F
(Optional)
Figure 33. Simplified Block Diagram and Basic Application
34702
Analog Integrated Circuit Device Data ?
34
Freescale Semiconductor
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