LED7707TR STMicroelectronics, LED7707TR Datasheet - Page 17

• Manufacturer Part Number: LED7707TR
• Description: IC LED DRIVR WHT BCKLT 24-VFQFPN
• Manufacturer: STMicroelectronics
• Type: Backlight, White LEDr

Specifications of LED7707TR

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 250kHz ~ 1MHz
• Voltage - Supply: 4.5 V ~ 36 V
• Voltage - Output: 36V
• Mounting Type: Surface Mount
• Package / Case: 24-VFQFN, 24-VFQFPN
• Operating Temperature: 0°C ~ 85°C
• Current - Output / Channel: 85mA
• Internal Switch(s): Yes
• High Level Output Current: 85 mA
• Operating Supply Voltage: 4.5 V to 36 V
• Maximum Supply Current: 1 mA
• Maximum Power Dissipation: 2.3 W
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• For Use With: 497-10044 - BOARD EVAL LCD BACKLIGHT LED7707
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Efficiency: -
• Lead Free Status / Rohs Status: Details
• Other names: 497-8492-2

LED7707
Figure 12. Effect of slope compensation on small inductor current perturbation (D > 0.5)
Equation 6
Inductor current (CCM)
Inductor current (CCM)
0.35
0.35
·T
·T
ΔI
ΔI
SW
SW
L
L
T
T
Inductor current
Inductor current
perturbation
perturbation
SW
SW
R
slope compensation (S
slope compensation (S
SLOPE
Programmed inductor peak current with
Programmed inductor peak current with
≤
2
I
I
⋅
BOOST, PEAK
BOOST, PEAK
K
S
⋅
L
V (
⋅
V (
OUT
E
E
)
)
OUT
−
−
V
IN
V
IN
)
−
V
BE
)
Operation description
t
t
AM00589v1
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