MAX8545/MAX8546/MAX8548
Low-Cost, Wide Input Range, Step-Down
Controllers with Foldback Current Limit
16 ______________________________________________________________________________________
COMPONENT
QTY
DESCRIPTION
C1
1
1µF, 10V X7R ceramic capacitor
Taiyo Yuden LMK212BJ105MG
C2
0
Not installed
C3
1
470µF, 35V, 39mΩ, 1.45A aluminum
electrolytic capacitor
SANYO 35MV470AX
(10 x 22 case size)
C4, C12
2
1µF, 35V X7R ceramic capacitors
Taiyo Yuden GMK316BJ105ML
C5, C8, C9
3
0.1µF, 10V X7R ceramic capacitors
Kemet C0603C104M8RAC
C6, C7
2
1000µF, 6.3V, 69mΩ, 0.8A aluminum
electrolytic capacitors
SANYO 6.3MV1000AX
(8 x 20 case size)
C10
1
6.8nF, 10V X7R ceramic capacitor
Kemet C0603C6822M8RAC
C11
0
Not installed
D1, D2
2
30V, 100mA Schottky diodes
Central Semiconductor CMPSH-3
L1
1
8.2µH, 5.8A, 9.5mΩ inductor
Sumida CEP125-8R2
Q1
1
30V, 35mΩ, dual n-channel, 8-pin SO
Fairchild FDS6912A
R1
1
10Ω ±5% resistor
R2
1
82kΩ ±5% resistor
R3
1
8.66kΩ ±1% resistor
R4
1
4.02kΩ ±1% resistor
COMPONENT QTY DESCRIPTION
C1 1
1µF, 10V X7R ceramic capacitor
Taiyo Yuden LMK212BJ105MG
C2, C3 2
470µF, 35V, 39mΩ, 1.45A aluminum
electrolytic capacitors
SANYO 35MV470AX
(10 x 22 case size)
C4, C12 2
1µF, 35V X7R ceramic capacitors
Taiyo Yuden GMK316BJ105ML
C5, C8, C9 3
0.1µF, 10V X7R ceramic capacitors
Kemet C0603C104M8RAC
C6, C7 2
1500µF, 6.3V, 44mΩ, 1.25A aluminum
electrolytic capacitors
SANYO 6.3MV1500AX
(10 x 20 case size)
C10 1
6.8nF, 10V X7R ceramic capacitor
Kemet C0603C682M8RAC
C11 0 Not installed
D1, D2 2
30V, 100mA Schottky diodes
Central Semiconductor CMPSH-3
L1 1
4µH, 8.3A, 6.6mΩ inductor
Sumida CEP125-4R0
Q1 1
30V, 18mΩ (LSFET)/35mΩ (HSFET),
dual n-channel, 8-pin SO
Fairchild FDS6982
R1 1 10Ω ±5% resistor
R2 1 68kΩ ±5% resistor
R3 1 8.66kΩ ±1% resistor
R4 1 4.02kΩ ±1% resistor
Table 2a. Component Selection for
Standard Applications for V
IN
= 10V to
24V, V
OUT
= 2.5V / 3A (Figure 2)
(MAX8546 Only)
Table 2b. Component Selection for
Standard Applications for V
IN
= 10V to
24V, V
OUT
= 2.5V / 6A (Figure 2)
(MAX8546 Only)
MAX8545/MAX8546/MAX8548
Low-Cost, Wide Input Range, Step-Down
Controllers with Foldback Current Limit
______________________________________________________________________________________ 17
56
LX
GNDV
IN
1
2
10
9
BST
DHFB
V
CC
COMP/EN
μMAX
TOP VIEW
3
4
8
7
DLVL
MAX8545
MAX8546
MAX8548
Pin Configuration
Chip Information
TRANSISTOR COUNT: 3351
PROCESS: BiCMOS
MAX8545/MAX8546/MAX8548
Low-Cost, Wide Input Range, Step-Down
Controllers with Foldback Current Limit
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.
18 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages
.)
10LUMAX.EPS
PACKAGE OUTLINE, 10L uMAX/uSOP
1
1
21-0061
REV.DOCUMENT CONTROL NO.APPROVAL
PROPRIETARY INFORMATION
TITLE:
TOP VIEW
FRONT VIEW
1
0.498 REF
0.0196 REF
S
SIDE VIEW
α
BOTTOM VIEW
0.037 REF
0.0078
MAX
0.006
0.043
0.118
0.120
0.199
0.0275
0.118
0.0106
0.120
0.0197 BSC
INCHES
1
10
L1
0.0035
0.007
e
c
b
0.187
0.0157
0.114
H
L
E2
DIM
0.116
0.114
0.116
0.002
D2
E1
A1
D1
MIN
-A
0.940 REF
0.500 BSC
0.090
0.177
4.75
2.89
0.40
0.200
0.270
5.05
0.70
3.00
MILLIMETERS
0.05
2.89
2.95
2.95
-
MIN
3.00
3.05
0.15
3.05
MAX
1.10
10
0.6±0.1
0.6±0.1
Ø0.50±0.1
H
4X S
e
D2
D1
b
A2
A
E2
E1
L
L1
c
α
GAGE PLANE
A2 0.030 0.037 0.75 0.95
A1
Revision History
Pages changed at Rev 2: 1, 2, 8, 11, 15, 16, 18

MAX8545EUB+T

Mfr. #:
Manufacturer:
Maxim Integrated
Description:
Switching Controllers Wide Input Range Step-Down Controller
Lifecycle:
New from this manufacturer.
Delivery:
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