19-2982; Rev 0; 9/03
MAX8561 Evaluation Kit
General Description
Features
ꢀ 2.7V to 5.5V Input Voltage Range
The MAX8561 evaluation kit (EV kit) demonstrates the
MAX8561/MAX8562s’ up to 4MHz pulse-width modulat-
ed (PWM) step-down DC-DC converters. The two circuits
are optimized for powering the DSP/microprocessor or
the power amplifiers (PAs) in wireless applications. The
MAX8561 circuit provides two adjustable output voltages
in the 0.6V to 2.5V range from a 2.7V to 5.5V input, and
can deliver 500mA of load current. In comparison, the
MAX8562 circuit provides an adjustable voltage in the
0.6V to 2.5V range and a bypass mode where the output
voltage is shorted to the input by an external MOSFET.
ꢀ 0.6V to 2.5V Adjustable Output Voltage Range
ꢀ VOUT1 = 1.8V/1.5V at 500mA (MAX8561)
ꢀ VOUT2 = 1.2V at 400mA or Bypass Mode
(MAX8562)
ꢀ 2MHz PWM Switching Frequency (MAX8561)
ꢀ 4MHz PWM Switching Frequency (MAX8562)
ꢀ 0.1µA (typ) Shutdown Current
ꢀ Surface-Mount Construction
Ordering Information
ꢀ Fully Assembled and Tested
PART
TEMP RANGE IC PACKAGE
ꢀ°C to +7ꢀ°C 8 Thmn DFN (ꢂaa x ꢂaa)
MAꢃ8Xꢁ1E3KIT
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
4.7µF 1ꢀ0, ꢁ.ꢂ3 ꢃX5 ꢄceramꢄ
ꢄrprꢄmtoes (ꢀꢁꢀꢂ)
TDK C1ꢁꢀ8ꢃX5ꢀJ47XK
1.ꢀµH mnduꢄtoe (ꢀ8ꢀꢁ)
Trmyo Yudcn LB2ꢀ1ꢁB15ꢀM
L2
P1
1
1
C1, C4
2
P-ꢄhrnncl MOSFET (SC7ꢀ)
3mshry Sm1417EDH (top arek BB)
2.2µF 1ꢀ0, ꢁ.ꢂ3 ꢃX5 ꢄceramꢄ
ꢄrprꢄmtoes (ꢀꢁꢀꢂ)
Trmyo Yudcn JMK1ꢀ7BJ22XKA oe
TDK C1ꢁꢀ8ꢃX5ꢀJ22XK
C2, CX
2
51
52
1
1
ꢂ
1XꢀkΩ 10 ecsmstoe (ꢀꢁꢀꢂ)
ꢂꢀ1kΩ 10 ecsmstoe (ꢀꢁꢀꢂ)
1ꢀꢀkΩ 10 ecsmstoes (ꢀꢁꢀꢂ)
5ꢂ, 54, 5X
1XꢀpF X0, Xꢀ3 Cꢀꢅ ꢄceramꢄ
ꢄrprꢄmtoe (ꢀꢁꢀꢂ)
TDK C1ꢁꢀ8Cꢀꢅ1H1X1JT oe
cqumvrlcnt
MAꢃ8Xꢁ1ETA (8-pmn thmn DFN ꢂaa x
ꢂaa) top arek AHD
Cꢂ
Cꢁ
1
1
U1
U2
1
1
MAꢃ8Xꢁ2ETA (8-pmn thmn DFN ꢂaa x
ꢂaa) top arek AHE
1ꢀꢀpF X0, Xꢀ3 Cꢀꢅ ꢄceramꢄ
ꢄrprꢄmtoe (ꢀꢁꢀꢂ)
TDK C1ꢁꢀ8Cꢀꢅ1H1ꢀ1JT oe
cqumvrlcnt
Uꢂ
ꢀ
4
1
Not mnstrllcd
Nonc
Nonc
Shunts
MAꢃ8Xꢁ1/MAꢃ8Xꢁ2 PC bored
JU1–JU4
4
1
ꢂ-pmn hcrdces
2.2µH mnduꢄtoe
Muertr LQHꢂ2CN252MX1
L1
Component Suppliers
SUPPLIER
PHONE
FAX
WEBSITE
www.auertr.ꢄoa
Muertr
77ꢀ-4ꢂꢁ-1ꢂꢀꢀ
8ꢀꢀ-ꢂ48-249ꢁ
847-8ꢀꢂ-ꢁ1ꢀꢀ
2ꢀꢂ-2ꢁ8-ꢁ2ꢁ1
77ꢀ-4ꢂꢁ-ꢂꢀꢂꢀ
847-92X-ꢀ899
847-ꢂ9ꢀ-44ꢀX
2ꢀꢂ-4X2-Xꢁ7ꢀ
Trmyo Yudcn
TDK
www.t-yudcn.ꢄoa
www.ꢄoaponcnt.tdk.ꢄoa
www.vmshry.ꢄoa
3mshry
Note: Please indicate that you are using the MAX8561/MAX8562 when contacting these component suppliers.
________________________________________________________________ Maxim Integrated Products
1
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.