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ISL95870BHRZ-TR5673

产品描述Switching Controllers STD ISL95870B TESTI NG IN UNM/KESM. SHI
产品类别半导体    电源管理   
文件大小1MB,共28页
制造商Intersil ( Renesas )
官网地址http://www.intersil.com/cda/home/
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ISL95870BHRZ-TR5673概述

Switching Controllers STD ISL95870B TESTI NG IN UNM/KESM. SHI

ISL95870BHRZ-TR5673规格参数

参数名称属性值
Product AttributeAttribute Value
制造商
Manufacturer
Intersil ( Renesas )
产品种类
Product Category
Switching Controllers
RoHSDetails
工厂包装数量
Factory Pack Quantity
6000

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DATASHEET
ISL95870, ISL95870A, ISL95870B
PWM DC/DC Controller with VID Inputs for Portable GPU Core-Voltage Regulator
The ISL95870, ISL95870A, ISL95870B ICs are Single-Phase
Synchronous-Buck PWM regulators featuring Intersil’s
proprietary R
4
Technology™. The wide 3.3V to 25V input
voltage range is ideal for systems that run on battery or
AC-adapter power sources. The ISL95870A and ISL95870B
are low-cost solutions for applications requiring dynamically
selected slew-rate controlled output voltages. The soft-start
and dynamic setpoint slew-rates are capacitor programmed.
Voltage identification logic-inputs select four (ISL95870A,
ISL95870B) resistor-programmed setpoint reference voltages
that directly set the output voltage of the converter between
0.5V and 1.5V, and up to 5V with a feedback voltage divider.
Compared with R
3
modulator, the R
4
modulator has
equivalent light-load efficiency, faster transient performance,
accurately regulated frequency control and all internal
compensation. These updates, together with integrated
MOSFET drivers and schottky bootstrap diode, allow for a
high-performance regulator that is highly compact and needs
few external components. The differential remote sensing for
output voltage and selectable switching frequency are another
two new functions. For maximum efficiency, the converter
automatically enters diode-emulation mode (DEM) during
light-load conditions such as system standby.
FN6899
Rev.1.00
December 2, 2013
Features
• Input Voltage Range: 3.3V to 25V
• Output Voltage Range: 0.5V to 5V
• Precision Regulation
- Proprietary R
4
™ Frequency Control Loop
- ±0.5% System Accuracy Over -10°C to +100°C
• Optimal Transient Response
- Intersil’s R
4
™ Modulator Technology
• Output Remote Sense
• Extremely Flexible Output Voltage Programmability
- 2-Bit VID Selects Four Independent Setpoint Voltages for
ISL95870B
- 2-Bit VID Selects Four Dependent or Three Independent
Setpoint Voltages for ISL95870A
- Simple Resistor Programming of Setpoint Voltages
• Selectable 300kHz, 500kHz, 600kHz or 1MHz PWM
Frequency in Continuous Conduction
• Automatic Diode Emulation Mode for Highest Efficiency
• Power-Good Monitor for Soft-Start and Fault Detection
Applications
• Mobile PC Graphical Processing Unit VCC Rail
• Mobile PC I/O Controller Hub (ICH) VCC Rail
• Mobile PC Memory Controller Hub (GMCH) VCC Rail
+5V
R
VCC
C
PVCC
C
VCC
R
PGOOD
V
IN
3.3V TO 25V
CIN
Q
HS
L
O
Q
LS
R
OCSET
C
BOOT
C
SEN
V
OUT
0.5V TO 5V
CO
RTN1
15
14
PVCC
PGND
16
LGATE
RTN1
R
FB1
1
2
GPIO
R
OFS1
3
4
C
SOFT
VCC
12
11
10
9
8
VO
GND
RTN
EN
SREF
FSEL
BOOT
UGATE
PHASE
OCSET
7
PGOOD
5
6
FB
13
R
O
R
OFS
R
FB
0
FIGURE 1. ISL95870 APPLICATION SCHEMATIC WITH ONE OUTPUT VOLTAGE SETPOINT AND DCR CURRENT SENSE
FN6899 Rev.1.00
December 2, 2013
Page 1 of 28

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制造商
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产品种类
Product Category
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RoHS Details Details Details Details
工厂包装数量
Factory Pack Quantity
6000 75 3000 3000
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