PM6600 STMicroelectronics, PM6600 Datasheet - Page 5

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

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

PM6600
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Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pin connection (through top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Efficiency vs DIM duty cycle @ fDIM = 200 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Efficiency vs DIM duty cycle @ fDIM = 500 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Efficiency vs DIM duty cycle @ fDIM = 1 kHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Efficiency vs DIM duty cycle @ fDIM = 5 kHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Efficiency vs DIM duty cycle @ fDIM = 10 kHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Efficiency vs DIM duty cycle @ fDIM = 20 kHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Efficiency vs DIM duty cycle @ Vin = 8 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Efficiency vs DIM duty cycle @ Vin = 12 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Efficiency vs DIM duty cycle @ Vin = 18 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Efficiency vs DIM duty cycle @ Vin = 24 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Efficiency vs Vin @ DIM duty cycles = 10% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Efficiency vs Vin @ DIM duty cycles = 50% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Efficiency vs Vin @ DIM duty cycles = 75% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Efficiency vs Vin @ DIM duty cycles = 100% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Working waveforms @ fDIM = 100 Hz, D = 1% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Working waveforms @ fDIM = 100 Hz, D = 10% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Working waveforms @ fDIM = 100 Hz, D = 50% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Working waveforms @ fDIM = 100 Hz, D = 80% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Working waveforms @ fDIM = 200 Hz, D = 1% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Working waveforms @ fDIM = 200 Hz, D = 20% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Working waveforms @ fDIM = 200 Hz, D = 50% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Working waveforms @ fDIM = 200 Hz, D = 80% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Working waveforms @ fDIM = 500 Hz, D = 1% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Working waveforms @ fDIM = 500 Hz, D = 50% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Working waveforms @ fDIM = 1 kHz, D = 1% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Working waveforms @ fDIM = 1 kHz, D = 50% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Working waveforms @ fDIM = 10 kHz, D = 1% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Working waveforms @ fDIM = 10 kHz, D = 50% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Working waveforms @ fDIM = 20 kHz, D = 1% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Working waveforms @ fDIM = 20 Hz, D = 50% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Output voltage ripple @ fDIM = 200 Hz, D = 1% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Output voltage ripple @ fDIM = 200 Hz, D = 20% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Output voltage ripple @ fDIM = 200 Hz, D = 50% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Output voltage ripple @ fDIM = 200 Hz, D = 80% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Shorted LED protection @ fDIM = 200 Hz all WLEDs connected . . . . . . . . . . . . . . . . . . . 23
Shorted LED protection @ fDIM = 200 Hz 1 WLED shorted . . . . . . . . . . . . . . . . . . . . . . . 23
Shorted LED protection @ fDIM = 200 Hz 2 WLEDs shorted. . . . . . . . . . . . . . . . . . . . . . . 23
Shorted LED protection @ fDIM = 200 Hz 3 WLEDs shorted - ROW disabled . . . . . . . . . 23
Open ROW detection @ fDIM = 200 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Simplified block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
AVCC filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
OVP threshold setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Multiple device synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
External sync waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Poor phase margin (a) and properly damped (b) load transient responses . . . . . . . . . . . . 31
Load transient response measurement set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Doc ID 14248 Rev 7
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