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| 型号： | LX1665ACDW-TR |
| 厂商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO18 |
| 封装： | ROHS COMPLIANT, PLASTIC, SOIC-18 |
| 文件页数： | 10/17页 |
| 文件大小： | 395K |
| 代理商： | LX1665ACDW-TR |
DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC
LX1664/64A, LX1665/65A
PRODUCT DA T ABOOK 1996/1997
Copyright 1999
Rev. 1.3a 11/04
2
P RODUCTION D ATA S HEET
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage (V
C1) .................................................................................................... 25V
Supply Voltage (V
CC) .................................................................................................... 15V
Output Drive Peak Current Source (500ns) ............................................................... 1.5A
Output Drive Peak Current Sink (500ns) ................................................................... 1.5A
Input Voltage (SS, INV, V
CC_CORE, CT, VID0-VID4) ........................................... -0.3V to 6V
Operating Junction Temperature
Plastic (N, D & DW Packages) ............................................................................. 150°C
Storage Temperature Range .................................................................... -65°C to +150°C
Lead Temperature (Soldering, 10 Seconds) ............................................................. 300°C
PACKAGE PIN OUTS
N (16-PIN DIP) PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θθθθθ
JA
65°C/W
N (18-PIN DIP) PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θθθθθ
JA
60°C/W
D PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θθθθθ
JA
120°C/W
DW PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θθθθθ
JA
90°C/W
Junction Temperature Calculation:
T
J = TA + (PD x θJA).
The
θ
JA numbers are guidelines for the thermal performance of the device/pc-board system.
All of the above assume no ambient airflow
THERMAL DATA
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with respect
to Ground. Currents are positive into, negative out of the specified terminal. Pin
numbers refer to DIL packages only.
V
C1
TDRV
GND
BDRV
V
CC
C
T
L
DRV
L
FB
SS
INV
V
CC_CORE
VID0
VID1
VID2
VID3
VID4
1
16
215
314
413
512
611
710
89
N PACKAGE — 16-Pin
LX1664/1664A (Top View)
V
C1
TDRV
GND
BDRV
V
CC
C
T
L
DRV
L
FB
SS
INV
V
CC_CORE
VID0
VID1
VID2
VID3
VID4
1
16
215
314
413
512
611
710
89
D PACKAGE — 16-Pin
LX1664/1664A (Top View)
V
C1
TDRV
GND
BDRV
V
CC
C
T
OV
L
DRV
PWRGD
SS
INV
V
CC_CORE
VID0
VID1
VID2
VID3
VID4
L
FB
1
18
217
316
415
514
613
712
811
910
N PACKAGE — 18-Pin
LX1665/1665A (Top View)
V
C1
TDRV
GND
BDRV
V
CC
C
T
OV
L
DRV
PWRGD
SS
INV
V
CC_CORE
VID0
VID1
VID2
VID3
VID4
L
FB
1
18
217
316
415
514
613
712
811
910
DW PACKAGE — 18-Pin
LX1665/1665A (Top View)
DEVICE SELECTION GUIDE
OVP and
Current-Sense
DEVICE
Packages
Power Good
Comp. Thresh. (mV) Optimal Load
LX1664
16-pin SOIC
No
100
Pentium-class (<10A)
LX1664A
& DIP
60
Pentium II (> 10A)
LX1665
18-pin SOIC
Yes
100
Pentium-class (<10A)
LX1665A
& DIP
60
Pentium II (> 10A)
DESCRIPTION (con't.)
Smallest Package Size. The LX1664 is
available in a narrow body 16-pin surface
mount IC package for space sensitive appli-
cations. The LX1665 provides the additional
functions of Over Voltage Protection (OVP)
and Power Good (PWRGD) output drives
for applications requiring output voltage
monitoring and protection functions.
Ultra-Fast Transient Response re-
duces system cost. The modulated off-
time architecture results in the fastest tran-
sient response for a given inductor, reduc-
ing output capacitor requirements, and re-
ducing the total regulator system cost.
Over-Voltage Protection and Power
Good Flag. The OVP output in the LX1665
& LX1665A can be used to drive an SCR
crowbar circuit to protect the load in the
event of a short-circuit of the main MOSFET.
The LX1665 & LX1665A also have a logic-
level Power Good Flag to signal when the
output voltage is out of specified limits.
Peak Package Solder Reflow Temp (40 second max. exposure)............................................260°C(+0, -5)
RoHS / Pb-free 100% Matte Tin Lead Finish
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