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参数资料
| 型号： | L6725TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 20 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | SOP-16 |
| 文件页数： | 27/32页 |
| 文件大小： | 812K |
| 代理商： | L6725TR |
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Summary description
L6725 - L6725A
4/32
1
Summary description
The device is a flexible high performance PWM buck controller dedicated for low voltage
distributed DC-DC. The input voltage can range from 1.8V to 18V, while the supply voltage can
range from 4.5V to 18V. The output voltage is adjustable down to 0.6V.
High peak current gate drivers provide for fast switching to the external power section, and the
output current can be in excess of 20A. The device is capable to manage minimum on-times
(TON) shorter than 100ns making possible conversions with very low duty cycle and very high
switching frequency. In order to guarantee a real overcurrent protection, also with very narrow
TON, the current sense is realized both on the high-side and low-side MOSFETs. When
necessary, two different current limit protections can be externally set through an external
resistor. The device can sink current after the soft-start phase while, during the soft-start, the
sink mode capability is disabled in order to allow a proper start-up also in pre-biased output
voltage conditions. Other features are over-voltage-protection and thermal shutdown.
1.1
Functional description
Figure 1.
Block diagram
Vin=1.8V-14V
Vcc=4.5V-14V
L6725
PGND
PHASE
GND
LGATE
BOOT
HGATE
OCH
FB
SS
Monitor
Protection and Ref
OSC
+
-
+
-
E/A
PWM
VCCDR
-
+
-
0.6V
OCL
COMP
EAREF
LDO
PGND
PHASE
GND
LGATE
BOOT
HGATE
OCH
V
OUT
FB
SS
Monitor
Protection and Ref
OSC
+
-
+
-
+
-
E/A
PWM
VCCDR
-
+
-
OCL
COMP
EAREF
LDO
PGOOD
SYNCH
Vcc = 14V - 18V
Vin = 14V - 18V
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| L6728D | 30 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO10 |
| L6911C | 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6726 | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:UNIVERSAL SPEECH CIRCUIT |
| L6726_08 | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:UNIVERSAL SPEECH CIRCUIT |
| L6726_12 | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:UNIVERSAL SPEECH CIRCUIT |
| L6726A | 功能描述:开关变换器、稳压器与控制器 Sngl phase PWM controller RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| L6726A_07 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Single phase PWM controller |
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