參數資料
型號： L6730CQ
廠商： 意法半導體
英文描述： Adjustable step-down controller with synchronous rectification
中文描述： 可調式降壓同步整流控制器
文件頁數： 8/50頁
文件大小： 1394K
代理商： L6730CQ
Pin connections and functions
L6730C - L6730D
8/50
4
T
MASK
By connecting this pin to V
CCDR
or ground it is possible to select two different
values for the leading edge blanking time on the peak-over-current-protection.
The device captures the analog value present at this pin at the start-up when
V
CC
meets the UVLO threshold.
5
GND
All the internal references are referred to this pin.
6
FB
This pin is connected to the error amplifier inverting input. Connect it to Vout
through the compensation network. This pin is also used to sense the output
voltage in order to manage the over voltage conditions and the PGood signal.
7
COMP
This pin is connected to the error amplifier output and is used to compensate
the voltage control loop.
8
SS/INH
The soft-start time is programmed connecting an external capacitor from this
pin and GND. The internal current generator forces a current of 10
μ
A through
the capacitor. This pin is also used to inhibit the device: when the voltage at
this pin is lower than 0.5V the device is disabled.
9
EAREF
It is possible to set two internal references 0.6V / 1.2V or provide an external
reference from 0V to 2.5V:
–
V
EAREF
from 0% to 80% of V
CCDR
>
External Reference
–
V
EAREF
from 80% to 95% of V
CCDR
>
V
REF
=1.2V
–
V
EAREF
from 95% to 100% of V
CCDR
>
V
REF
=0.6V
An internal clamp limits the maximum V
EAREF
at 2.5V (typ.). The device
captures the analog value present at this pin at the start-up when V
CC
meets
the UVLO threshold.
10
OSC
Connecting an external resistor from this pin to GND, the external frequency
can be increased according with the following equation:
Connecting a resistor from this pin to V
CCDR
(5V), the switching frequency can
be lowered according with the following equation:
If the pin is left open, the switching frequency is 400 KHz. Normally this pin is at
a voltage of 1.2V. In OVP the pin is pulled up to 4.5V (only in latched mode).
Don’t connect a capacitor from this pin to GND.
Table 3.
Pins connection
)
(
10
K
88
.
R
400
6
+
=
KHz
Fsw
OSC
)
(
10
K
01
.
R
400
7
=
KHz
Fsw
OSC
相關PDF資料
PDF描述
L6730C Adjustable step-down controller with synchronous rectification
L6730CQTR Adjustable step-down controller with synchronous rectification
L6730CTR Adjustable step-down controller with synchronous rectification
L6730D Adjustable step-down controller with synchronous rectification
L6730DTR Adjustable step-down controller with synchronous rectification
相關代理商/技術參數
參數描述
L6730CQTR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Adjustable step-down controller with synchronous rectification
L6730CTR 功能描述:IC REG CTRLR BUCK PWM VM 20TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數:1 頻率 - 最大:500kHz 占空比:100% 電源電壓:8.2 V ~ 30 V 降壓:無 升壓:無 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:0°C ~ 70°C 封裝/外殼:8-DIP（0.300"，7.62mm） 包裝:管件 產品目錄頁面:1316 (CN2011-ZH PDF)
L6730D 功能描述:IC REG CTRLR BUCK PWM VM 20TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數:1 頻率 - 最大:500kHz 占空比:100% 電源電壓:8.2 V ~ 30 V 降壓:無 升壓:無 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:0°C ~ 70°C 封裝/外殼:8-DIP（0.300"，7.62mm） 包裝:管件 產品目錄頁面:1316 (CN2011-ZH PDF)
L6730DTR 功能描述:IC REG CTRLR BUCK PWM VM 20TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數:1 頻率 - 最大:500kHz 占空比:100% 電源電壓:8.2 V ~ 30 V 降壓:無 升壓:無 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:0°C ~ 70°C 封裝/外殼:8-DIP（0.300"，7.62mm） 包裝:管件 產品目錄頁面:1316 (CN2011-ZH PDF)
L6730TR 功能描述:DC/DC 開關控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
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