MAX1724EZK30+T Maxim Integrated Products, MAX1724EZK30+T Datasheet

IC DC-DC CONV STP UP TSOT23-5

MAX1724EZK30+T

Manufacturer Part Number
MAX1724EZK30+T
Description
IC DC-DC CONV STP UP TSOT23-5
Manufacturer
Maxim Integrated Products
Type
Step-Up (Boost)r
Datasheet

Specifications of MAX1724EZK30+T

Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
3V
Current - Output
150mA
Voltage - Input
0.8 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
TSOT-23-5, TSOT-5, TSOP-5
Power - Output
571mW
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Frequency - Switching
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
MAX1724EZK30+T
The MAX1722/MAX1723/MAX1724 compact, high-effi-
ciency, step-up DC-DC converters are available in tiny, 5-
pin thin SOT23 packages. They feature an extremely low
1.5µA quiescent supply current to ensure the highest pos-
sible light-load efficiency. Optimized for operation from
one to two alkaline or nickel-metal-hydride (NiMH) cells, or
a single Li+ cell, these devices are ideal for applications
where extremely low quiescent current and ultra-small size
are critical.
Built-in synchronous rectification significantly improves
efficiency and reduces size and cost by eliminating the
need for an external Schottky diode. All three devices fea-
ture a 0.5Ω N-channel power switch. The MAX1722/
MAX1724 also feature proprietary noise-reduction circuitry,
which suppresses electromagnetic interference (EMI)
caused by the inductor in many step-up applications. The
family offers different combinations of fixed or adjustable
outputs, shutdown, and EMI reduction (see Selector
Guide).
19-1735; Rev 0; 7/01
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Pagers
Remote Controls
Remote Wireless
Transmitters
Personal
Medical Devices
Digital Still Cameras
0.8V TO 5.5V
ON
IN
OFF
Typical Operating Circuit
________________________________________________________________ Maxim Integrated Products
BATT
SHDN
General Description
MAX1724
10µH
GND
1.5µA I
Single-Cell Battery-
Powered Devices
Low-Power Hand-Held
Instruments
MP3 Players
Personal Digital
Assistants (PDA)
OUT
LX
Applications
OUT
3.3V AT
UP TO 150mA
Q
, Step-Up DC-DC Converters
o Up to 90% Efficiency
o No External Diode or FETs Needed
o 1.5µA Quiescent Supply Current
o 0.1µA Logic-Controlled Shutdown
o ±1% Output Voltage Accuracy
o Fixed Output Voltage (MAX1724) or Adjustable
o Up to 150mA Output Current
o 0.8V to 5.5V Input Voltage Range
o 0.91V Guaranteed Startup (MAX1722/MAX1724)
o Internal EMI Suppression (MAX1722/MAX1724)
o Thin SOT23-5 Package (1.1mm max Height)
Pin Configurations are continued at end of data sheet.
MAX1722EZK-T
MAX1723EZK-T
MAX1724EZK27-T
MAX1724EZK30-T
MAX1724EZK33-T
MAX1724EZK50-T
MAX1722EZK
MAX1723EZK
MAX1724EZK27
MAX1724EZK30
MAX1724EZK33
MAX1724EZK50
Output Voltage (MAX1722/MAX1723)
TOP VIEW
PART
PART
BATT
in Thin SOT23-5
GND
FB
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
OUTPUT (V)
1
2
3
Ordering Information
Adjustable
Adjustable
THIN SOT23-5
Fixed 2.7
Fixed 3.0
Fixed 3.3
Fixed 5.0
MAX1722
Pin Configurations
Selector Guide
5
4
PIN-
PACKAGE
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
SHDN
LX
OUT
Yes
Yes
Yes
Yes
Yes
No
Features
DAMPING
Yes
Yes
Yes
Yes
Yes
MARK
ADQG
ADQH
ADQK
ADQF
ADQJ
LX
No
ADQI
TOP
1

Related parts for MAX1724EZK30+T

MAX1724EZK30+T Summary of contents

Page 1

... LX 0.8V TO 5.5V MAX1724 OUT ON SHDN OFF GND ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. , Step-Up DC-DC Converters Q in Thin SOT23 90% Efficiency o No External Diode or FETs Needed o 1.5µA Quiescent Supply Current o 0.1µ ...

Page 2

I , Step-Up DC-DC Converters Q in Thin SOT23-5 ABSOLUTE MAXIMUM RATINGS OUT, SHDN, BATT GND ................................-0. GND ................................................-0. OUT, LX Current.......................................................................1A Continuous Power Dissipation (T = +70°C) A 5-Pin Thin ...

Page 3

I ELECTRICAL CHARACTERISTICS (continued 1.2V 3.3V (MAX1722/MAX1723), V BATT OUT unless otherwise noted. Typical values are at T PARAMETER SYMBOL Shutdown Current into BATT SHDN Voltage Threshold V SHDN Input Bias Current ELECTRICAL CHARACTERISTICS (V ...

Page 4

I , Step-Up DC-DC Converters Q in Thin SOT23-5 (Figure 3 (MAX1723), Figure 7 (MAX1722), Figure 8 (MAX1724), V unless otherwise noted.) EFFICIENCY vs. LOAD CURRENT (V = 5.0V) OUT 100 ...

Page 5

I (Figure 3 (MAX1723), Figure 7 (MAX1722), Figure 8 (MAX1724), V unless otherwise noted.) LOAD-TRANSIENT RESPONSE 3.3V 50mA 0 200µs/div 50mV/div OUT 20mA/div OUT PIN MAX1722 MAX1723 MAX1724 1 — 1 — 1 ...

Page 6

I , Step-Up DC-DC Converters Q in Thin SOT23-5 OUT MAX1723 SHDN FB ERROR COMPARATOR 1.235V REFERENCE Figure 1. MAX1723 Simplified Functional Diagram Detailed Description The MAX1722/MAX1723/MAX1724 compact, high-effi- ciency, step-up DC-DC converters are guaranteed to start up with ...

Page 7

I BATT MAX1724 R 2 SHDN ERROR COMPARATOR R 1 1.235V REFERENCE Figure 2. MAX1724 Simplified Functional Diagram µ 1. OUT 10µF LX SHDN OUT MAX1723 GND FB Figure 3. MAX1723 Single-Cell Operation up voltage ...

Page 8

I , Step-Up DC-DC Converters Q in Thin SOT23-5 Figure 4. Simplified Diagram of Damping Switch 1µs/div Figure 5. LX Ringing Without Damping Switch (MAX1723) BATT/Damping Switch (MAX1722/MAX1724) The MAX1722/MAX1724 include an internal damping switch (Figure 4) to minimize ...

Page 9

I INPUT 10µH 0. OUT 10µF BATT LX OUT MAX1722 FB GND Figure 7. Adjustable Output Circuit Inductor Selection The control scheme of the MAX1722/MAX1723/ MAX1724 permits flexibility in choosing an inductor. A 10µH inductor value performs ...

Page 10

I , Step-Up DC-DC Converters Q in Thin SOT23-5 Table 2. Suggested Surface-Mount Capacitors and Manufacturers (C1 and C2) CAPACITOR MANUFACTURER VALUE 1µF to 10µF AVX 10µF to 330µF 1µF to 22µF Kemet 10µF to 330µF 68µF to 330µF ...

Page 11

I TOP VIEW SHDN 1 5 MAX1723 2 GND THIN SOT23-5 ______________________________________________________________________________________ , Step-Up DC-DC Converters Q Pin Configurations (continued) LX OUT in Thin SOT23-5 BATT MAX1724 2 GND 3 4 OUT SHDN ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2001 Maxim Integrated Products ...

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