MAX1531ETJ+ Maxim Integrated Products, MAX1531ETJ+ Datasheet - Page 16

• Manufacturer Part Number: MAX1531ETJ+
• Description: IC PS CTRLR MULTI-OUTPUT 32TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX1531ETJ+

• Applications: Five Power Supply Monitor
• Voltage - Supply: 4.5 V ~ 28 V
• Current - Supply: 1.7mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-TQFN Exposed Pad
• Voltage - Output: 1.25 ~ 16.5 V
• Number Of Outputs: 5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Input: -
• Lead Free Status / Rohs Status: Details

Multiple-Output Power-Supply
Controllers for LCD Monitors
The standard application circuit (Figure 1) of the
MAX1531 is a complete power-supply system for TFT
LCD monitors. The circuit generates a 3.3V/1.5A main
output, a 2.5V/500mA output for the timing controller
and digital sections of source/gate drive ICs, a
10V/500mA source drive supply voltage, a 9.7V/50mA
gamma reference, a 25V/20mA gate-on voltage, and a
-10V/50mA gate-off voltage. The input voltage is 12V
±10%. Table 1 lists the selected components and Table
2 lists the component suppliers. The standard applica-
tion circuit (Figure 2) of the MAX1530 is similar to the
MAX1531 application circuit except that gate-on and
gate-off voltages are eliminated.
* For MAX1531 only.
Table 2. Component Suppliers
16
Table 1. Selected Component List
Central Semi
Fairchild
Sumida
TDK
DESIGNATION
C12, C19*
C21, C22
D1, D6*
______________________________________________________________________________________
C13
C3
C7
C9
D2
SUPPLIER
Standard Application Circuit
4.7µF, 25V X7R ceramic capacitor (1210)
TDK C3225X7R1E475K
22µF, 6.3V X7R ceramic capacitor
TDK C3216X7R0J226M
10µF, 6.3V X5R ceramic capacitor
TDK C2012X5R0J106M
0.47µF, 16V X7R ceramic capacitors (0805)
TDK C2012X7R1C474K
4.7µF, 16V X7R ceramic capacitor
TDK C3216X7R1C475K
2.2µF, 25V X7R ceramic capacitors (1206)
TDK C3216X7R1C475M
100mA, 30V Schottky diodes (SOD523)
Central Semiconductor CMOSH-3
100mA, 75V, small-signal switching diode,
SOT23 Fairchild Semiconductor MMBD4148
DESCRIPTION
516-435-1110
888-522-5372
847-956-0666
847-803-6100
PHONE
516-435-1824
972-910-8036
847-956-0702
847-390-4405
FAX
The MAX1530/MAX1531 power-supply controllers pro-
vide logic and bias power for LCD monitors. Figure 3
shows the IC functional diagram. The main step-down
controller employs a current-mode PWM control method
to ease compensation requirements and provide excel-
lent load- and line-transient response. The use of syn-
chronous rectification yields excellent efficiency.
The MAX1530 includes three analog gain blocks to
control three auxiliary positive linear regulators, and the
MAX1531 includes five analog gain blocks to control
four positive and one negative linear regulators. Use
the positive gain blocks to generate low-voltage rails
directly from the input voltage or the main step-down
converter output, or higher voltages using charge
DESIGNATION
D3*, D4*, D5*
Q5*, Q6*
Q2, Q3*
Q1, Q4
N1
L1
www.centralsemi.com
www.fairchildsemi.com
www.sumida.com
www.components.tdk.com
200mA, 25V dual Schottky diodes (SOT23)
Fairchild BAT54S
10µH, 2.3A (DC) inductor
Sumida CDR7D28MN-100
2.5A, 30V dual N-channel MOSFET (6-pin
Super SOT)
Fairchild FDC6561AN
3A, 60V l ow - satur ati on P N P b i p ol ar tr ansi stor s
( S O T- 223)
Fai r chi l d N Z T660A
200mA, 40V PNP bipolar transistors (SOT23)
Fairchild MMBT3906
200m A, 40V N P N b i p ol ar tr ansi stor s ( S OT23)
Fai r chi l d M M BT3904
Detailed Description
DESCRIPTION
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