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LT3667EMSE#TRPBF

Description
IC REG TRPL BUCK/LINEAR 16MSOP
Categorysemiconductor    Power management   
File Size487KB,34 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LT3667EMSE#TRPBF Overview

IC REG TRPL BUCK/LINEAR 16MSOP

LT3667EMSE#TRPBF Parametric

Parameter NameAttribute value
TopologyBuck (1), Linear (LDO) (2)
Functionany function
Number of outputs3
Frequency - Switch243kHz ~ 2.2MHz
Voltage/Current - Output 11.2 V ~ 38.6 V,400mA
Voltage/Current - Output 20.8 V ~ 38.6 V,200mA
Voltage/Current - Output 30.8 V ~ 38.6 V,200mA
With LED drivernone
With monitornone
with sequencernone
Voltage - Power1.6 V ~ 45 V
Operating temperature-40°C ~ 125°C
Installation typesurface mount
Package/casing16-TFSOP (0.118", 3.00mm wide) exposed pad
Supplier device packaging16-MSOP-EP
FEATURES
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LT3667
40V 400mA Step-Down
Switching Regulator with
Dual Fault Protected LDOs
DESCRIPTION
The
LT
®
3667
is a monolithic triple power supply composed
of a 400mA buck switching regulator and two 200mA low
dropout linear regulators (LDOs).
The buck regulator includes a high efficiency switch, a
boost diode, and the necessary oscillator, control and
logic circuitry. Current mode topology is used for fast
transient response and good loop stability. Low ripple
Burst Mode operation maintains high efficiency at low
output currents while keeping output ripple below 15mV
in a typical application.
Each LDO supplies 200mA of output current with a typical
dropout voltage of 340mV, and each LDO has an accurate
resistor programmable current limit.
Internal protection circuitry includes reverse-battery
protection, current limiting, thermal limiting and reverse
current protection.
The LT3667 is available in a thermally-enhanced 16-Lead
MSOP and a 24-Pin 3mm x 5mm QFN package with ex-
posed pad for low thermal resistance.
L,
LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
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Triple Output Supply from a Single Input Requires
Only One Inductor
I
Q
= 50μA at 12V
IN
to 5V, 3.3V and 2.5V with No Load
Buck Regulator:
Low Ripple (<15mV
P-P
) Burst Mode Operation
®
400mA Output with Internal Power Switch
4.3V to 40V Input Operation Range (60V Max)
Dual Low Dropout Linear Regulators
200mA Outputs with Programmable Current Limits
1.6V to 45V Input Range
Fault Protected to ±45V
Adjustable 250kHz to 2.2MHz Switching Frequency
Synchronizable Between 300kHz and 2.2MHz
Programmable Undervoltage Lockout
Power Good Indicators
Available in a Thermally-Enhanced 16-Lead MSOP
and 24-Lead (3mm
×
5mm) QFN Packages
APPLICATIONS
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Automotive Battery Regulation
Power for Portable Instrumentation
Industrial Supplies
Fault-Protected Sensor Supply
TYPICAL APPLICATION
V
IN
6V TO 40V
TRANSIENT
TO 60V
No-Load Supply Current
4.7µF
UVLO1 IN1
100
BOOST
SW
DA
FB1
LT3667
BD
IN2
IN3
OUT3
499k
FB2
158k
FB3
158k
3667 TA01a
0.22µF 22µH
931k
294k
22µF
90
SUPPLY CURRENT (µA)
5V
200mA
80
70
60
50
40
30
20
10
2.2µF
0
5
10
25
20
15
INPUT VOLTAGE (V)
30
35
ON OFF
EN
PG
RT
174k
22pF
2.5V
100mA
4.7µF
OUT2
340k
3.3V
100mA
EN2/ILIM2 GND EN3/ILIM3
3667 TA01b
3667fb
For more information
www.linear.com/LT3667
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