MAX1800EVKIT Maxim Integrated, MAX1800EVKIT Datasheet

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MAX1800EVKIT

Manufacturer Part Number
MAX1800EVKIT
Description
Power Management IC Development Tools
Manufacturer
Maxim Integrated
Series
MAX1800r
Datasheet
The MAX1800 evaluation kit (EV kit) accepts 1.8V to
5.5V battery voltages and provides all of the output volt-
ages required in digital still cameras (DSC). The EV kit
consists of the MAX1800 multi-output master converter
and the MAX1801 slave step-up converter.
The EV kit provides 10 separate output voltages. The
MAX1800 provides one main-system step-up converter
(3.3V/400mA), one linear regulator for the DSP core
(1.8V/200mA), one step-up converter for the backlight
(7V/100mA), three flyback outputs for the CCD
(14.3V/10mA, 5V/50mA, -8.15V/10mA), and three fly-
back outputs for the LCD (13.85V/10mA, 5V/50mA,
-16.23V/10mA). In addition, the MAX1801 provides one
step-up converter for the motor (5V/500mA).
The EV kit’s outputs are adjustable and are suitable for
applications running from 2- or 3-cell alkaline, NiCd, or
NiMH batteries or from a single lithium-on (Li+) battery.
19-1985; Rev 1; 1/02
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.
DESIGNATION
C3, C15, C21
C5−C8, C20
C1, C22
C4, C18
C9−C14
C16
C2
________________________________________________________________ Maxim Integrated Products
QTY
2
1
3
2
5
6
1
General Description
10µF, 10V ceramic
capacitors (1210)
TDK C3225X5R1A106M
100pF, ceramic capacitor
(0603)
0.1µF ceramic capacitors
(0603)
4.7µF, 10V ceramic
capacitors (1206)
TDK C3216X5R1A475M or
Taiyo Yuden
LMK316BJ475ML
1000pF ceramic capacitors
(0603)
1µF, 25V ceramic capacitors
(1206)
TDK C3216X7R1E105KT
4.7µF, 6.3V ceramic
capacitor (0805)
TDK C2012X5R0J475K
DESCRIPTION
MAX1800 Evaluation Kit
o 10 Outputs
o 1.8V to 5.5V Input Voltage Range
o All Converters Synchronized to Single Oscillator
o 100kHz to 1MHz Switching Frequency
o Main Power-OK Output
o Independent Shutdown of Each Converter
o Short-Circuit-Protected Flyback Outputs
o Soft-Start on Each Output
o Fully Assembled and Tested
MAX1800EVKIT
DESIGNATION
D2, D3, D5, D9
D1, D4, D6
One Synchronous Rectified Step-Up Converter
Two Step-Up Converters
One Low-Dropout Linear Regulator Output
Six Flyback Outputs
PART
D7, D8
C17
C19
C24
D10
TEMP RANGE
0°C to +70°C
QTY
Ordering Information
1
1
1
3
4
2
1
220µF, 10V, 100mΩ low-ESR
(E case)
AVX TPSE227M010R0100
47µF, 6.3V, 100mΩ low-ESR
(C case)
Sanyo 6TPA47M
0.01µF ceramic capacitor
(0603)
PN junction diodes (SOT323)
Central Semiconductor
CMSD-4448
Schottky diodes (SOT323)
Central Semiconductor
CMSSH-3
Schottky diodes (SOD-123)
Motorola MBR0520L or
Fairchild Semiconductor
MBR0520L
Schottky diode (CASE 403A-
03 SMB)
Motorola MBRS130LT3
Component List
DESCRIPTION
IC PACKAGE
32 TQFP, 8 SOT23
Features
1

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MAX1800EVKIT Summary of contents

Page 1

... Input Voltage Range o All Converters Synchronized to Single Oscillator o 100kHz to 1MHz Switching Frequency o Main Power-OK Output o Independent Shutdown of Each Converter o Short-Circuit-Protected Flyback Outputs o Soft-Start on Each Output o Fully Assembled and Tested PART MAX1800EVKIT DESIGNATION DESCRIPTION C17 C19 C24 D1, D4, D6 D2, D3, D5, D9 D7, D8 ...

Page 2

MAX1800 Evaluation Kit DESIGNATION QTY DESCRIPTION JU1−JU6 6 3-pin headers JU7− JU12 6 2-pin headers 1.4µH inductor L1 1 Sumida CR43-1R4 10µH inductor L2 1 Sumida CDRH6D38-100 0.5µH inductor L3 1 Sumida CR43 Type Sample 4757-T019 N-channel MOSFETs Q1, Q2, ...

Page 3

Table 1. Output Voltage and Current Capability LABEL VOLTAGE/CURRENT MAIN 3.3V at 400mA LDO 1.8V at 200mA OUT1A 14.3V at 10mA OUT1B 5V at 50mA OUT1C -8.15V at 10mA OUT2A 13.85V at 10mA OUT2B 5V at 50mA OUT2C -16.23V at ...

Page 4

MAX1800 Evaluation Kit Customizing the MAX1800 EV Kit Setting the Main Output Voltage MAIN is set by a voltage divider, which drops the out- put voltage to the 1.25V feedback threshold voltage. To change the 3.3V setting of MAIN, change ...

Page 5

Also, note that the voltages at MAIN, OUT3, and OUT4 will drop slightly below the battery voltage when OFF, due to the DC current path through the inductor and output rectifier. For the step-up outputs, a switch may be added ...

Page 6

MAX1800 Evaluation Kit Figure 1. MAX1800 EV Kit Schematic 6 _______________________________________________________________________________________ ...

Page 7

Figure 2. MAX1800 EV Kit Component Placement Guide— Component Side 1.0" Figure 4. MAX1800 EV Kit PC Board Layout—Inner Layer 2 (AGND) _______________________________________________________________________________________ MAX1800 Evaluation Kit 1.0" Figure 3. MAX1800 EV Kit PC Board Layout—Component Side 1.0" Figure 5. ...

Page 8

... 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. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2002 Maxim Integrated Products 1.0" ...

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