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參數(shù)資料
| 型號： | PC33702DWBR2 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 6 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, PDSO32 |
| 封裝： | PLASTIC, SOIC-32 |
| 文件頁數(shù)： | 18/24頁 |
| 文件大小： | 647K |
| 代理商： | PC33702DWBR2 |
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
33702
3
PIN FUNCTION DESCRIPTION
Pin
Pin Name
Formal Name
Definition
1
FREQ
Oscillator Frequency
This selection switcher pin can be adjusted by connecting external resistor RF to the
FREQ pin. The default switching frequency (FREQ pin left open or tied to VDDI) is set
to 300 kHz.
2
INV
Inverting Input
Buck Controller Error Amplifier inverting input.
3
VOUT
Output Voltage
Output voltage of the buck converter. Input pin of the switching regulator power
sequence control circuit.
4, 5
VIN2
Input Voltage 2
Buck regulator power input. Drain of the high-side power MOSFET.
6, 7
SW
Switch
Buck regulator switching node. This pin is connected to the inductor.
8, 9
24, 25
GND
Ground
Analog ground of the IC, thermal heatsinking.
10, 11
PGND
Power Ground
Buck regulator power ground.
12
VBD
Boost Drain
Drain of the internal boost regulator power MOSFET.
13
VBST
Boost Voltage
Internal boost regulator output voltage. The internal boost regulator provides a 20 mA
output current to supply the drive circuits for the integrated power MOSFETs and the
external N-channel power MOSFET of the linear regulator. The voltage at the VBST pin
is 8.0 V nominal.
14
BOOT
Bootstrap
Bootstrap capacitor input.
15
SDA
Serial Data
I2C bus pin. Serial data.
16
SCL
Serial Clock
I2C bus pin. Serial clock.
17
LCMP
Linear Compensation
Linear regulator compensation pin.
18
LFB
Linear Feedback
Linear regulator feedback pin.
19
LDO
Linear Regulator
Input pin of the linear regulator power sequence control circuit.
20
CS
Current Sense
Current sense pin of the LDO. Overcurrent protection of the linear regulator external
power MOSFET. The voltage drop over the LDO current sense resistor RS is sensed
between the CS and LDO pins. The LDO current limit can be adjusted by selecting the
proper value of the current sensing resistor RS.
21
LDRV
Linear Drive
LDO gate drive of the external pass N-channel MOSFET.
22
VIN1
Input Voltage 1
The input supply pin for the integrated circuit. The internal circuits of the IC are supplied
through this pin.
CLKSYN
1
EN2
EN1
ADDR
GND
VDD1
VIN1
LDRV
CS
LFB
LCMP
LDO
RT
CLKSEL
RESET
FREQ
VIN2
SW
GND
PGND
VBD
VBST
SDA
SCL
BOOT
VIN2
INV
VOUT
8
9
10
11
12
13
14
15
16
3
4
5
6
7
2
32
25
24
23
22
21
20
19
18
17
30
29
28
27
26
31
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