Datasheet AL8862Q (Diodes) - 5
| Manufacturer | Diodes |
| Description | Automotive Grade 55V 1A Step-Down Converter |
| Pages / Page | 16 / 5 — AL8862Q. Typical Performance Characteristics. Quiescent Current v. s. … |
| File Format / Size | PDF / 995 Kb |
| Document Language | English |
AL8862Q. Typical Performance Characteristics. Quiescent Current v. s. Input Voltage Quiescent Current. vs. Temperature
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Text Version of Document
AL8862Q Typical Performance Characteristics
(TA = +25°C, VIN = 16V, unless otherwise noted).
Quiescent Current v s. Input Voltage Quiescent Current vs. Temperature
420 480
418 470
460 416
450 414
440 412
A) 430 410 A)
t ( n t ( 420 n
408 rre 410 u rre
406 u 400 t C
404 n t C 390 n
402 sce 380
ie 400 sce u 370 ie
Q 398 u 360 Q V =16V
IN 396 350
394 340
392 330
390 320
3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130
Input Voltage (V) Temperature (OC)
SET Threshold Voltag e vs. Input voltage SET Threshold Voltage vs. Temperature
120 120
115 115
110 110
105 105
(mV) (mV)
e 100 100 g e g
lta 95 at 95 l
Vo 90 Vo 90
ld d o l
85 o sh 85 sh
re h 80 re 80
T h T 75 75
VTH_H V SET TH_H
70 V SET 70 TH_MEAN V
TH_MEAN 65 V 65 TH_L V
TH_L 60 60
3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130
Input Voltage (V) Temperature (OC)
PWM Dimming (VIN=16V, 3LEDs, 68μH, RS=0.3Ω) Analog Dimming (VIN=16V, 3LEDs, 47μH, RS=0.3Ω) Output Current vs. Duty Cycle LED Current vs . CTRL Pin Voltage
340 360
320 340 f =100Hz
300 PWM 320
280 f =500Hz 300 PWM
260 f =1kHz 280 PWM
240 260 f =10kHz
220 PWM 240 (mA) t 220 200
t (mA) n n 200 180
rre rre u 180 160
u C t 160 140
t C u u p 140 120 t
tp u 120 u 100 O
O 100 80
80 60
60 40
40 20 20
0 0
0 10 20 30 40 50 60 70 80 90 100 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
Duty Cycle (%) CTRL Pi n Voltage (V)
AL8862Q 5 of 16 December 2019 Document number: DS42199 Rev. 3 - 2
www.diodes.com
© Diodes Incorporated
(TA = +25°C, VIN = 16V, unless otherwise noted).
Quiescent Current v s. Input Voltage Quiescent Current vs. Temperature
420 480
418 470
460 416
450 414
440 412
A) 430 410 A)
t ( n t ( 420 n
408 rre 410 u rre
406 u 400 t C
404 n t C 390 n
402 sce 380
ie 400 sce u 370 ie
Q 398 u 360 Q V =16V
IN 396 350
394 340
392 330
390 320
3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130
Input Voltage (V) Temperature (OC)
SET Threshold Voltag e vs. Input voltage SET Threshold Voltage vs. Temperature
120 120
115 115
110 110
105 105
(mV) (mV)
e 100 100 g e g
lta 95 at 95 l
Vo 90 Vo 90
ld d o l
85 o sh 85 sh
re h 80 re 80
T h T 75 75
VTH_H V SET TH_H
70 V SET 70 TH_MEAN V
TH_MEAN 65 V 65 TH_L V
TH_L 60 60
3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130
Input Voltage (V) Temperature (OC)
PWM Dimming (VIN=16V, 3LEDs, 68μH, RS=0.3Ω) Analog Dimming (VIN=16V, 3LEDs, 47μH, RS=0.3Ω) Output Current vs. Duty Cycle LED Current vs . CTRL Pin Voltage
340 360
320 340 f =100Hz
300 PWM 320
280 f =500Hz 300 PWM
260 f =1kHz 280 PWM
240 260 f =10kHz
220 PWM 240 (mA) t 220 200
t (mA) n n 200 180
rre rre u 180 160
u C t 160 140
t C u u p 140 120 t
tp u 120 u 100 O
O 100 80
80 60
60 40
40 20 20
0 0
0 10 20 30 40 50 60 70 80 90 100 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
Duty Cycle (%) CTRL Pi n Voltage (V)
AL8862Q 5 of 16 December 2019 Document number: DS42199 Rev. 3 - 2
www.diodes.com
© Diodes Incorporated
