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参数资料
| 型号： | L6726ATR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 1.5 A SWITCHING CONTROLLER, 297 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | SOP-8 |
| 文件页数： | 31/35页 |
| 文件大小： | 986K |
| 代理商： | L6726ATR |
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L6726A
Pins description and connection diagrams
Doc ID 12754 Rev 4
5/35
2
Pins description and connection diagrams
Figure 3.
Pins connection (top view)
2.1
Pin descriptions
Table 2.
Pins descriptions
1
2
3
4
VCC
FB
COMP / DIS
PHASE
LGATE / OC
GND
UGATE
BOOT
5
6
7
8
L6726A
Pin n
Name
Function
1BOOT
HS driver supply.
Connect through a capacitor (100 nF) to the floating node (LS-drain) pin
and provide necessary bootstrap diode from VCC.
2
UGATE
HS driver output. Connect to HS MOSFET gate.
3GND
All internal references, logic and drivers are connected to this pin.
Connect to the PCB ground plane.
4
LGATE / OC
LGATE. LS driver output. Connect to LS MOSFET gate.
OC. Over current threshold set. During a short period of time following VCC
rising over UVLO threshold, a 10
μA current is sourced from this pin.
Connect to GND with an ROCSET resistor greater than 5kΩ to program OC
Threshold. The resulting voltage at this pin is sampled and held internally
as the OC set point. Maximum programmable OC threshold is 0.55 V. A
voltage greater than 0.75V (max) activates an internal clamp and causes
OC threshold to be set at 400 mV. ROCSET not connected sets the 400 mV
default threshold.
5VCC
Device and LS driver power supply.
Operative range from 4.1 V to 13.2 V. Filter with at least 1
μF MLCC to GND.
6FB
Error amplifier inverting input.
Connect with a resistor RFB to the output regulated voltage. Additional
resistor ROS to GND may be used to regulate voltages higher than the
reference.
7
COMP / DIS
COMP. Error amplifier output. Connect with an RF - CF // CP to GND to
compensate the device control loop in conjunction to the FB pin.
During the soft-start phase, a 10
μA current is sourced from this pin so the
compensation capacitors also act to program the SS time.
DIS. The device can be disabled by pulling this pin lower than 0.4 V (min).
Setting free the pin, the device enables again.
8
PHASE
HS driver return path, current-reading and adaptive-dead-time monitor.
Connect to the LS drain to sense RdsON drop to measure the output current.
This pin is also used by the adaptive-dead-time control circuitry to monitor
when HS MOSFET is OFF.
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相关代理商/技术参数 |
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| L6726-D18-T | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:UNIVERSAL SPEECH CIRCUIT |
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| L6726G-S18-T | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:UNIVERSAL SPEECH CIRCUIT |
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