MAX1533ETJ+ Maxim Integrated Products, MAX1533ETJ+ Datasheet - Page 30

• Manufacturer Part Number: MAX1533ETJ+
• Description: IC POWER SUPPLY CONTROLER 32TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX1533ETJ+

• 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
• Product: Power Monitors
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Accuracy: 1 %
• Sense Voltage (max): 5.5 V
• Supply Current (max): 35 uA
• Supply Voltage (max): 26 V
• Supply Voltage (min): 6 V
• Case: QFN
• Dc: 05+
• 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
Alternatively, high-power applications that do not
require highly accurate current-limit protection may
reduce the overall power dissipation by connecting a
series RC circuit across the inductor (Figure 9b) with an
equivalent time constant:
where R
configuration, the current-sense resistance equals the
inductor’s DC resistance (R
case inductance and R
Figure 9. Current-Sense Configurations
30
______________________________________________________________________________________
L
is the inductor’s series DC resistance. In this
R
L
L
a) OUTPUT SERIES RESISTOR SENSING
b) LOSSLESS INDUCTOR SENSING
=
L
MAX1533
MAX1537
MAX1533
MAX1537
C
values provided by the induc-
EQ
SENSE
×
CSH_
CSH_
CSL_
CSL_
DH_
GND
DH_
DL_
GND
LX_
DL_
LX_
R
= R
EQ
L
). Use the worst-
N
N
N
N
H
L
H
L
D
C
C
D
L
IN
IN
L
INPUT (V
INPUT (V
tor manufacturer, adding some margin for the induc-
tance drop over temperature and load.
The output filter capacitor must have low enough equiv-
alent series resistance (ESR) to meet output ripple and
load-transient requirements, yet have high enough ESR
to satisfy stability requirements. The output capaci-
tance must be high enough to absorb the inductor
energy while transitioning from full-load to no-load con-
ditions without tripping the overvoltage fault protection.
When using high-capacitance, low-ESR capacitors (see
the Output-Capacitor Stability Considerations section),
IN
)
IN
L
)
R
EQ
INDUCTOR
C
R
EQ
SENSE
Output Capacitor Selection
C
OUT
C
OUT