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MAX1570EVKIT 数据手册 - Maxim Integrated（美信）
制造商:
Maxim Integrated（美信）
分类:
开发套件
封装:
KIT
描述:
评估板MAX1570 Evaluation Kit for the MAX1570
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MAX1570EVKIT数据手册
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General Description
The MAX1570 evaluation kit (EV kit) is a fully assembled
and tested surface-mount circuit board. The EV kit con-
tains the MAX1570, a white LED driver with high-efficien-
cy charge pump. The EV kit accepts a 2.7V to 5.5V input
and drives up to five white LEDs with regulated constant
current for uniform intensity. The MAX1570 runs at 1MHz
fixed frequency, allowing tiny external components.
Features
♦ Excellent (0.3%) LED-to-LED Current Matching
♦ 2.7V to 5.5V Input Range
♦ 30mA/LED Drive Capability
♦ Five LEDs at 150mA Total Current
♦ 0.1µA (typ) IC Shutdown Current
♦ Digital PWM LED Dimming Control
♦ Fixed 1MHz Switching Frequency
♦ Surface-Mount Component Construction
♦ 16-Pin 4mm x 4mm Thin QFN Package
♦ Fully Assembled and Tested
Quick Start
The MAX1570 EV kit is fully assembled and tested.
Perform the following steps to verify board operation.
Do not turn on the power supply until all connections
are completed:
1) Verify that shunts are across pins 1 and 2 of jumpers
JU1 (EN1) and JU2 (EN2).
2) Connect a 2.7V to 5.5V power supply to the VIN pad.
Connect the power-supply ground to the GND pad to
the right of VIN.
3) Turn on the power supply.
4) Verify that all five white LEDs are on with uniform
intensity.
For instructions on dimming control, see Table 1.
Evaluates: MAX1570
MAX1570 Evaluation Kit
________________________________________________________________ Maxim Integrated Products 1
19-2608; Rev 0; 10/02
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 QTY DESCRIPTION
C1, C3, C4 3
1µF ±10%, 10V
X5R ceramic capacitors (0603)
TDK C1608X5R1A105K or
Taiyo Yuden JMK107BJ105KA
C2 1
4.7µF ±20%, 6.3V
X5R ceramic capacitor (0805)
Taiyo Yuden JMK212BJ475MG or
TDK C2012X5R0J475M
C5 0
Not installed,
ceramic capacitor (0603)
D1–D5 5 Surface-mount white LEDs
JU1, JU2 2 3-pin headers
R1 1 9.09kΩ ±1% resistor (0603)
R2, R3 0 Not installed, resistor (0603)
U1 1
MAX1570ETE
(16-pin QFN (4mm x 4mm))
None 2 Shunts
None 1 MAX1570 PC board
None 1 MAX1570 EV kit data sheet
None 1 MAX1570 data sheet
Component List
PART TEMP RANGE IC PACKAGE
MAX1570EVKIT 0°C to +70°C 16 Thin QFN (4mm x 4mm)
Ordering Information
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