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参数资料
| 型号： | ISL6420AIAZ-TK |
| 厂商： | Intersil |
| 文件页数： | 12/21页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 20-QSOP |
| 标准包装： | 1 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1.4MHz |
| 占空比： | 100% |
| 电源电压： | 4.5 V ~ 28 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 20-SSOP（0.154"，3.90mm 宽） |
| 包装： | 标准包装 |
| 其它名称： | ISL6420AIAZ-TKDKR |
ISL6420A
CDEL
The PGOOD signal can be delayed by a time
proportional to a CDEL current of 2μA and the value of
the capacitor connected between this pin and ground.
A 0.1μF will typically provide 125ms delay. When in the
Voltage Margining mode, the CDEL current is 100μA
typical and provides the delay for the output voltage
slew rate, 2.5ms typical for the 0.1μF capacitor.
PGND
This pin provides the power ground for the IC. Tie this
pin to the ground plane through the lowest impedance
connection.
PVCC
This pin is the power connection for the gate drivers.
Connect this pin to the VCC5 pin.
VCC5
This pin is the output of the internal 5V LDO. Connect a
minimum of 4.7μF ceramic decoupling capacitor as
close to the IC as possible at this pin. Refer to Table 1.
ENSS
This pin provides enable/disable function and soft-start
for the PWM output. The output drivers are turned off
when this pin is held below 1V.
OCSET
Connect a resistor (R OCSET ) and a capacitor from this
pin to the drain of the upper MOSFET. R OCSET , an
internal 100μA current source (I OCSET ), and the upper
MOSFET on resistance r DS(ON) set the converter
overcurrent (OC) trip point.
GPIO1/REFIN
This is a dual function pin. If VMSET/MODE is not
connected to VCC5 then this pin serves as GPIO1.
Refer to Table 3 for GPIO commands interpretation.
To use GPIO1/REFIN as input reference, connect
VMSET/MODE to VCC5 and GPIO2 to SGND. Connect
the desired reference voltage to the GPIO1/REFIN pin
in the range of 0.6V to 1.25V.
Connect GPIO1/REFIN and VMSET/MODE pins to
VCC5, GPIO2 to SGND, the IC operates with the
internal reference and no voltage margining function.
REFOUT
It provides buffered reference output for REFIN.
Connect 2.2μF decoupling capacitor to this pin.
VMSET/MODE
This pin is a dual function pin. Tie this pin to VCC5 to
disable voltage margining. When not tied to VCC5, this
pin serves as VMSET. Connect a resistor from this pin
to ground to set delta for voltage margining.
If voltage margining and external reference tracking
mode are not needed, VNSET/MODE, GPIO1/REFIN
and GPIO2 all together can be tied directly to ground.
GPIO2
This is general purpose IO pin for voltage margining.
Refer to Table 3.
Exposed Thermal Pad
This pad is electrically isolated. Connect this pad to the
signal ground plane using at least five vias for a robust
thermal conduction path.
TABLE 2. VOLTAGE MARGINING/DDR OR TRACKING SUPPLY PIN CONFIGURATION
PIN CONFIGURATIONS
FUNCTION/MODES
Enable Voltage Margining
VMSET/MODE
Pin Connected to
REFOUT
Connect a 2.2μF
GPIO1/REFIN
Serves as a general
GPIO2
Serves as a general
GND with resistor. It capacitor for bypass of purpose I/O. Refer to purpose I/O. Refer to
is used as VMSET.
external reference.
Table 3.
Table 3.
No Voltage Margining. Normal
H
Connect a 2.2μF
H (Note 14)
L
operation with internal reference.
Buffered V REFOUT = 0.6V.
capacitor to GND.
No Voltage Margining. External
reference. Buffered
H
Connect a 2.2μF
capacitor to GND.
Connect to an
external reference
L
V REFOUT = V REFIN
voltage source (0.6V
to 1.25V)
NOTES:
13. The GPIO1/REFIN and GPIO2 pins cannot be left floating.
14. Ensure that GPIO1/REFIN is tied high prior to the logic change at VMSET/MODE.
12
FN9169.4
December 4, 2009
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6420AIAZ-TKS2698 | 制造商:Intersil Corporation 功能描述:PB-FREE SYNC BUCK PWM CONT. W/ 4.5V-28V INPUT,20LD QSOP, T&R - Tape and Reel |
| ISL6420AIR | 制造商:Intersil Corporation 功能描述:VOLT MODE PWM CNTRLR 0.6V TO 27.5V 700MA 20QFN - Rail/Tube |
| ISL6420AIR-TK | 功能描述:IC REG CTRLR BUCK PWM VM 20-QFN RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| ISL6420AIRZ | 功能描述:IC REG CTRLR BUCK PWM VM 20-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
| ISL6420AIRZS2698 | 制造商:Intersil Corporation 功能描述:PB-FREE W/ANNEAL SYNC BUCK PWM CONT. WITH 4.5V-28V INPUT,20L - Rail/Tube |
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