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FDS8880 参数 Datasheet PDF下载

FDS8880图片预览
型号: FDS8880
PDF下载: 下载PDF文件 查看货源
内容描述: 20 V , 6的同步降压型 [20 V, 6 A Synchronous Step-Down]
分类和应用:
文件页数/大小: 28 页 / 827 K
品牌: AD [ ANALOG DEVICES ]
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Data Sheet
FEATURES
Input voltage: 4.5 V to 20 V
Integrated 44 mΩ high-side MOSFET
0.6 V ± 1% reference voltage over temperature
Continuous output current: 6 A
Programmable switching frequency: 250 kHz to 1.4 MHz
Synchronizes to external clock: 250 kHz to 1.4 MHz
180° out-of-phase synchronization
Programmable UVLO
Power-good output
External compensation
Internal soft start with external adjustable option
Startup into a precharged output
Supported by ADIsimPower design tool
20 V, 6 A Synchronous Step-Down
Regulator with Low-Side Driver
TYPICAL APPLICATIONS CIRCUIT
V
IN
C
IN
1
2
3
4
5
R
OSC
6
7
C
SS
8
PVIN
PVIN
UVLO
BST
SW
16
15
14
13
12
11
10
9
R
BOT
C
C_EA
R
C_EA
10209-001
C
BST
L
V
OUT
C
OUT
ADP2381
SW
LD
VREG
PGND
GND
FB
FET
C
VREG
PGOOD
RT
SYNC
EN/SS
COMP
R
TOP
C
CP_EA
APPLICATIONS
Communication infrastructure
Networking and servers
Industrial and instrumentation
Healthcare and medical
Intermediate power rail conversion
DC-to-dc point of load application
100
95
90
85
EFFICIENCY (%)
Figure 1.
80
75
70
65
60
55
50
0
1
2
3
4
5
6
OUTPUT CURRENT (A)
V
OUT
= 3.3V
V
OUT
= 5V
V
OUT
= 1.2V
10209-002
Figure 2.
Efficiency vs. Output Current, V
IN
= 12 V, f
SW
= 250 kHz
GENERAL DESCRIPTION
The
is a current mode control, synchronous, step-
down, dc-to-dc regulator. It integrates a 44 mΩ power MOSFET
and a low-side driver to provide a high efficiency solution. The
runs from an input voltage of 4.5 V to 20 V and can
deliver 6 A of output current. The output voltage can be
adjusted to 0.6 V to 90% of the input voltage. The switching
frequency of the
can be programmed from
250 kHz to 1.4 MHz or fixed at 290 kHz or 550 kHz. The
synchronization function allows the switching frequency to be
synchronized to an external clock to minimize system noise.
External compensation and an adjustable soft start provide
design flexibility. The power-good output provides simple and
reliable power sequencing. Additional features include
programmable undervoltage lockout (UVLO), overvoltage
protection (OVP), overcurrent protection (OCP), and thermal
shutdown (TSD).
The
operates over the −40°C to +125°C junction
temperature range and is available in a 16-lead TSSOP_EP
package.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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