参数资料
| 型号： | ISL62873HRUZ-T |
| 厂商： | Intersil |
| 文件页数： | 2/17页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 16UTQFN |
| 标准包装： | 3,000 |
| 系列： | Robust Ripple Regulator™ (R³) |
| PWM 型： | 控制器 |
| 输出数： | 1 |
| 频率 - 最大： | 330kHz |
| 电源电压： | 3.3 V ~ 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： | -10°C ~ 100°C |
| 封装/外壳： | 16-UFQFN |
| 包装： | 带卷 (TR) |
ISL62873
Functional Pin Descriptions
PIN NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SYMBOL
GND
EN
VID0
SREF
SET0
PGOOD
FB
VO
OCSET
PHASE
UGATE
BOOT
VCC
PVCC
LGATE
PGND
DESCRIPTION
IC ground for bias supply and signal reference.
Enable input for the IC. Pulling EN above the VENTHR rising threshold voltage
initializes the soft-start sequence.
Logic input for setpoint voltage selector. Use to select between the two setpoint
reference voltages. External reference input when enabled by connecting the SET0
pin to the VCC pin.
Soft-start and voltage slew-rate programming capacitor input. Setpoint reference
voltage programming resistor input. Connects internally to the inverting input of
the VSET voltage setpoint amplifier. See Figure 5 on page 9 for capacitor and
resistor connections.
Voltage set-point programming resistor input. See Figure 5 on page 9 for resistor
connection.
Power-good open-drain indicator output. This pin changes to high impedance when
the converter is able to supply regulated voltage. The pull-down resistance
between the PGOOD pin and the GND pin identifies which protective fault has shut
Voltage feedback sense input. Connects internally to the inverting input of the
control-loop error amplifier. The converter is in regulation when the voltage at the
FB pin equals the voltage on the SREF pin. The control loop compensation network
connects between the FB pin and the converter output. See Figure 9 on page 13.
Output voltage sense input for the R3 modulator. The VO pin also serves as the
reference input for the overcurrent detection circuit. See Figure 6 on page 10.
Input for the overcurrent detection circuit. The overcurrent setpoint programming
resistor ROCSET connects from this pin to the sense node. See Figure 6 on
page 10.
Return current path for the UGATE high-side MOSFET driver. VIN sense input for
the R3 modulator. Inductor current polarity detector input. Connect to junction of
output inductor, high-side MOSFET, and low-side MOSFET. See “Application
High-side MOSFET gate driver output. Connect to the gate terminal of the high-side
MOSFET of the converter.
Positive input supply for the UGATE high-side MOSFET gate driver. The BOOT pin is
internally connected to the cathode of the Schottky boot-strap diode. Connect an
MLCC between the BOOT pin and the PHASE pin.
Input for the IC bias voltage. Connect +5V to the VCC pin and decouple with at
(Figures 2 and 3).
Input for the LGATE and UGATE MOSFET driver circuits. The PVCC pin is internally
connected to the anode of the Schottky boot-strap diode. Connect +5V to the PVCC
pin and decouple with a 10μF MLCC to the PGND pin. See“Application Schematics”
Low-side MOSFET gate driver output. Connect to the gate terminal of the low-side
MOSFET of the converter.
Return current path for the LGATE MOSFET driver. Connect to the source of the
low-side MOSFET.
Ordering Information
PART
TEMP
PACKAGE
NUMBER
RANGE
Tape & Reel
PKG.
(Note)
ISL62873HRUZ-T*
PART MARKING
GAP
(°C)
-10 to +100
(Pb-Free)
16 Ld 2.6x1.8 μTQFN
DWG. #
L16.2.6x1.8A
NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and
NiPdAu plate - e4 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free
products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
2
FN6930.1
August 31, 2010
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相关代理商/技术参数 |
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| ISL62875HRUZ-T | 功能描述:IC REG CTRLR BUCK PWM 20UTQFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:Robust Ripple Regulator™ (R³) 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) |
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