LTM8022EV-PBF LINER [Linear Technology], LTM8022EV-PBF Datasheet

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LTM8022EV-PBF

Manufacturer Part Number
LTM8022EV-PBF
Description
1A, 36V DC/DC ?Module
Manufacturer
LINER [Linear Technology]
Datasheet
FEATURES
APPLICATIONS
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TYPICAL APPLICATION
Complete Step-Down Switch Mode Power Supply
Wide Input Voltage Range: 3.6V to 36V
0.8V to 10V Output Voltage
1A Output Current
Adjustable Switching Frequency: 200kHz to 2.4MHz
Current Mode Control
(e4) RoHS Compliant Package with Gold Pad Finish
Programmable Soft-Start
Tiny, Low Profi le (11.25mm × 9mm × 2.82mm)
Surface Mount LGA Package
Automotive Battery Regulation
Power for Portable Products
Distributed Supply Regulation
Industrial Supplies
Wall Transformer Regulation
7V TO
V
36V
IN
*
*RUNNING VOLTAGE RANGE. PLEASE REFER TO
APPLICATIONS INFORMATION FOR START-UP DETAILS
2.2μF
7V
IN
29.4k
to 36V
RUN/SS
SHARE
V
RT
IN
IN
GND
LTM8022
, 5V/1A μModule
SYNC
V
BIAS
AUX
ADJ
OUT
PG
93.1k
8022 TA01a
TM
Regulator
4.7μF
V
5V
1A
OUT
DESCRIPTION
μModule is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
The LTM
supply. Included in the package are the switching control-
ler, power switches, inductor, and all support components.
Operating over an input voltage range of 3.6V to 36V, the
LTM8022 supports an output voltage range of 0.8V to 10V,
and a switching frequency range of 200kHz to 2.4MHz,
each set by a single resistor. Only the bulk input and output
fi lter capacitors are needed to fi nish the design.
The low profi le package (2.82mm) enables utilization of
unused space on the bottom of PC boards for high density
point of load regulation.
The LTM8022 is packaged in a thermally enhanced, compact
(11.25mm × 9mm) and low profi le (2.82mm) overmolded
Land Grid Array (LGA) package suitable for automated
assembly by standard surface mount equipment. The
LTM8022 is RoHS compliant.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
1A, 36V DC/DC µModule
®
8022 is a complete 1A, DC/DC step-down power
100
90
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70
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30
0.001
V
IN
EFFICIENCY
Effi ciency and Power Loss
= 12V
0.01
LOAD CURRENT (A)
0.1
POWER
LOSS
8022 TA01b
LTM8022
1
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
8022fb
1

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LTM8022EV-PBF Summary of contents

Page 1

FEATURES n Complete Step-Down Switch Mode Power Supply n Wide Input Voltage Range: 3.6V to 36V n 0.8V to 10V Output Voltage n 1A Output Current n Adjustable Switching Frequency: 200kHz to 2.4MHz n Current Mode Control n (e4) RoHS ...

Page 2

... Internal Operating Temperature.............. –40°C to 125°C Solder Temperature ............................................... 250°C Storage Temperature .............................. –55°C to 125°C ORDER INFORMATION LEAD FREE FINISH PART MARKING* LTM8022EV#PBF LTM8022V LTM8022IV#PBF LTM8022V LTM8022MPV#PBF LTM8022MPV Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. ...

Page 3

ELECTRICAL CHARACTERISTICS erature range, otherwise specifi cations are at T unless otherwise specifi ed. (Note 2) SYMBOL PARAMETER V Input DC Voltage IN V Output DC Voltage OUT R Minimum Allowable R ADJ(MIN) ADJ I Continuous Output DC Current OUT(MAX) ...

Page 4

LTM8022 TYPICAL PERFORMANCE CHARACTERISTICS Effi ciency vs Load (8V ) OUT 95 12V IN 90 24V IN 85 36V 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 OUTPUT CURRENT (A) 8022 G01 Minimum Required Input ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Output Current vs Input Voltage (Output Short) 3200 3000 2800 2600 2400 2200 2000 1800 1600 INPUT VOLTAGE (V) 8022 G10 Minimum Required Input Voltage vs Output Load (5V 1200 1000 800 600 ...

Page 6

LTM8022 PIN FUNCTIONS V (Bank 1): The V pin supplies current to the LTM8022’ internal regulator and to the internal power switch. This pin must be locally bypassed with an external, low ESR capacitor of at least 2.2μF ...

Page 7

BLOCK DIAGRAM V IN 0.1μF SHARE CURRENT MODE RUN/SS SYNC OPERATION The LTM8022 is a standalone non-isolated step-down switching DC/DC power supply. It can deliver output current with only bulk external input and output capacitors. ...

Page 8

LTM8022 APPLICATIONS INFORMATION Table 1. Recommended Component Values and Confi guration OUT IN 3.6V to 36V 0.82V 2.2μF 3.6V to 36V 1V 2.2μF 3.6V to 36V 1.2V 2.2μF 3.6V to 36V 1.5V 2.2μF 3.6V to ...

Page 9

APPLICATIONS INFORMATION For most applications, the design process is straight forward, summarized as follows Table 1, fi nd the row that has the desired input volt- age range and output voltage. 2. Apply the recommended ...

Page 10

LTM8022 APPLICATIONS INFORMATION of operating frequencies, a haphazardly chosen one may result in undesirable operation under certain operating or fault conditions. A frequency that is too high can reduce effi ciency, generate excessive heat or even damage the LTM8022 if ...

Page 11

APPLICATIONS INFORMATION Load Sharing Two or more LTM8022’s may be paralleled to produce higher currents this, tie the OuT all the paralleled LTM8022’s together. Synchronize the LTM8022s to avoid beat frequencies if required. To ...

Page 12

LTM8022 APPLICATIONS INFORMATION PCB Layout Most of the headaches associated with PCB layout have been alleviated or even eliminated by the high level of integration of the LTM8022. The LTM8022 is nevertheless a switching power supply, and care must be ...

Page 13

APPLICATIONS INFORMATION Hot-Plugging Safely The small size, robustness and low impedance of ceramic capacitors make them an attractive option for the input bypass capacitor of LTM8022. However, these capacitors can cause problems if the LTM8022 is plugged into a live ...

Page 14

LTM8022 APPLICATIONS INFORMATION CLOSING SWITCH SIMULATES HOT PLUG + LOW IMPEDANCE ENERGIZED 24V SUPPLY + 22μF AI.EI. + 0.1μF Figure 5. A Well Chosen Input Network Prevents Input Voltage Overshoot and Ensures Reliable Operation When the LTM8022 is Connected to ...

Page 15

TYPICAL APPLICATIONS 3.6V TO 15V 3.6V TO 15V 0.82V Step-Down Converter OUT LTM8022 2.2μF BIAS AUX RUN/SS PG SHARE R GND SYNC ADJ T 69.8k 13M 8022 TA02 *RUNNING VOLTAGE RANGE. PLEASE REFER TO ...

Page 16

LTM8022 TYPICAL APPLICATIONS 3.8V TO 36V – Positive-to-Negative Converter 31V LTM8022 RUN/SS SHARE 2.2μF R GND SYNC ADJ T 29.4k *RUNNING VOLTAGE RANGE. PLEASE REFER TO APPLICATIONS INFORMATION FOR START-UP DETAILS 16 ...

Page 17

TYPICAL APPLICATIONS V IN 5.5V TO 36V OPTIONAL SYNC Two LTM8022’s in Parallel, 3. OUT LTM8022 RUN/SS AUX SHARE BIAS PG 2.2μF RT GND SYNC ADJ 43.2k 78.7k IN OUT LTM8022 RUN/SS AUX SHARE BIAS PG ...

Page 18

LTM8022 PACKAGE DESCRIPTION Z aaa 18 LGA Package 50-Lead (11.25mm × 9.00mm × 2.82mm) (Reference LTC DWG # 05-08-1804 Rev bbb 4.445 3.175 1.905 0.635 0.000 0.635 1.905 3.175 4.445 0.3175 0.635 0.9525 8022fb ...

Page 19

PACKAGE DESCRIPTION Table 3. LTM8022 Pinout (Sorted by Pin Number) PIN Information f μrnished by ...

Page 20

LTM8022 TYPICAL APPLICATION 4.75V TO 36V RELATED PARTS PART NUMBER DESCRIPTION LTM4600/LTM4602 10A and 6A DC/DC μModule LTM4601/LTM4603 12A and 6A DC/DC μModule LTM4604/LTM4608 4A, 8A Low Voltage DC/DC μModule LTM4605/LTM4607 Buck-Boost DC/DC μModule LTM8020 200mA, 36V DC/DC μModule LTM8023 ...

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