PM6600 STMicroelectronics, PM6600 Datasheet - Page 2

IC LED DRIVR WHT BCKLT 24-VFQFPN

PM6600

Manufacturer Part Number
PM6600
Description
IC LED DRIVR WHT BCKLT 24-VFQFPN
Manufacturer
STMicroelectronics
Type
Backlight, White LEDr
Datasheet

Specifications of PM6600

Topology
PWM, Step-Up (Boost)
Number Of Outputs
6
Internal Driver
Yes
Type - Primary
Backlight
Type - Secondary
White LED
Frequency
200kHz ~ 1MHz
Voltage - Supply
4.7 V ~ 28 V
Voltage - Output
36V
Mounting Type
Surface Mount
Package / Case
24-VFQFN, 24-VFQFPN
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
32mA
Internal Switch(s)
Yes
Number Of Segments
60
Operating Supply Voltage
4.7 V to 28 V
Maximum Power Dissipation
2.3 W
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
For Use With
497-8414 - BOARD EVAL BASED ON PM6600
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Efficiency
-
Lead Free Status / Rohs Status
 Details

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Contents
Contents
1
2
3
4
5
6
7
8
2/60
Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1
2.2
Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1
3.2
3.3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Typical operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Operation description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
Backlight driver section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.1
8.2
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Boost section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.1.1
Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Switching frequency selection and synchronization . . . . . . . . . . . . . . . . . 28
System stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.4.1
7.4.2
Soft-start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Boost current limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Enable function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Current generators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
PWM dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Loop compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Slope compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Doc ID 14248 Rev 7
PM6600

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