MAX1533AETJ+ Maxim Integrated Products, MAX1533AETJ+ Datasheet - Page 16

• Manufacturer Part Number: MAX1533AETJ+
• Description: IC POWER SUPPLY CONTROLER 32TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX1533AETJ+

• Applications: Power Supply Controller
• Voltage - Input: 4.5 ~ 26 V
• Current - Supply: 15µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

High-Efficiency, 5x Output, Main Power-Supply
Controllers for Notebook Computers
Table 1. Component Selection for Standard Applications
Table 2. Component Suppliers
The MAX1533A/MAX1537A standard application circuit
(Figure 1) generates the 5V/5A and 3.3V/5A typical of the
main supplies in a notebook computer. The input supply
range is 7V to 24V. See Table 1 for component selections
and Table 2 for component manufacturers.
The MAX1533A/MAX1537A contain two interleaved
fixed-frequency step-down controllers designed for low-
voltage power supplies. The optimal interleaved archi-
tecture guarantees out-of-phase operation, reducing the
input capacitor ripple. Two internal LDOs generate
an auxiliary LDO that can be configured to the preset
12V output or an adjustable output.
16
AVX
Central Semiconductor
Coilcraft
Coiltronics
Fairchild Semiconductor www.fairchildsemi.com
International Rectifier
Kemet
the keep-alive 5V and 3.3V power. The MAX1537A has
C
C
N
______________________________________________________________________________________
N
OUT5
OUT3
D
C
Inductor/Transformer
H_
L_
SUPPLIER
L_
IN_
COMPONENT
High-Side MOSFET
Low-Side MOSFET
Input Voltage
Schottky Rectifier
, Input Capacitor
, Output Capacitor
, Output Capacitor
(if needed)
R
CS
Detailed Description
www.avx.com
www.centralsemi.com
www.coilcraft.com
www.coiltronics.com
www.irf.com
www.kemet.com
(2) 10µF, 25V
Taiyo Yuden TMK432BJ106KM
150µF, 6.3V, 40mΩ, low-ESR capacitor
Sanyo 6TPB150ML
220µF, 4V, 40mΩ, low-ESR capacitor
Sanyo 4TPB220ML
Fairchild Semiconductor FDS6612A
International Rectifier IRF7807V
Fairchild Semiconductor FDS6670S
International Rectifier IRF7807VD1
2A, 30V, 0.45V
Nihon EC21QS03L
T1 = 6.8µH, 1:2 turns Sumida 4749-T132
L1 = 5.8µH, 8.6A Sumida CDRH127-5R8NC
10mΩ ±1%, 0.5W resistor
IRC LR2010-01-R010F or
Dale WSL-2010-R010F
WEBSITE
f
V
IN
5A/300kHz
= 7V to 24V
Two internal linear regulators produce preset 5V (LDO5)
and 3.3V (LDO3) low-power outputs. LDO5 powers
LDO3, the gate drivers for the external MOSFETs, and
provides the bias supply (V
analog control, reference, and logic blocks. LDO5
supplies at least 100mA for external and internal loads,
including the MOSFET gate drive, which typically varies
from 5mA to 50mA, depending on the switching frequen-
cy and external MOSFETs selected. LDO3 also supplies
at least 100mA for external loads. Bypass LDO5 and
LDO3 with a 2.2µF or greater output capacitor, using an
additional 1.0µF per 20mA of internal and external load.
Panasonic
Sanyo
Sumida
Taiyo Yuden
TDK
TOKO
Vishay (Dale, Siliconix)
Fixed Linear Regulators (LDO5 and LDO3)
SUPPLIER
(2) 10µF, 25V
Taiyo Yuden TMK432BJ106KM
150µF, 6.3V, 40mΩ, low-ESR capacitor
Sanyo 6TPB150ML
220µF, 4V, 40mΩ, low-ESR capacitor
Sanyo 4TPB220ML
Fairchild Semiconductor FDS6612A
International Rectifier IRF7807V
Fairchild Semiconductor FDS6670S
International Rectifier IRF7807VD1
2A, 30V, 0.45V
Nihon EC21QS03L
3.9µH
Sumida CDRH124-3R9NC
10mΩ ±1%, 0.5W resistor
IRC LR2010-01-R010F or
Dale WSL-2010-R010F
www.panasonic.com/industrial
www.semiconductor-sanyo.com
www.sumida.com
www.t-yuden.com
www.component.tdk.com
www.tokoam.com
www.vishay.com
f
V
CC
IN
5A/500kHz
= 7V to 24V
) required for the SMPS
WEBSITE