MAX8630W Ver la hoja de datos (PDF) - Maxim Integrated
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MAX8630W Datasheet PDF : 12 Pages
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125mA 1x/1.5x Charge Pumps for 5 White LEDs
in 3mm x 3mm TDFN
Typical Operating Characteristics (continued)
(VIN = 3.6V, ENM = ENS = IN, TA = +25°C, unless otherwise noted.)
INPUT CURRENT vs. INPUT VOLTAGE
DRIVING 2 SUB LEDs
160
VIN FALLING
140
120
100
ILED = 20mA
80
60
ILED = 8.125mA
40
20 ILED = 1.875mA
0
2.7 3.0 3.3 3.6 3.9 4.2
INPUT VOLTAGE (V)
INPUT RIPPLE VOLTAGE vs. SUPPLY
VOLTAGE DRIVING 5 WHITE LEDs
140
20mA/LED
120
100 15mA/LED
80
8mA/LED
60
40 2mA/LED
20
0
2.7
3.2
3.7
4.2
INPUT VOLTAGE (V)
LED CURRENT MATCHING vs. INPUT
VOLTAGE (25mA/LED)
28
27
26
25
24
23
22
21
20
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
INPUT VOLTAGE (V)
LED CURRENT MATCHING vs. INPUT
VOLTAGE (2.5mA/LED)
2.80
OUTPUT CURRENT vs. TEMPERATURE
(5 LEDs AT 25mA EACH)
140
2.70
120
2.60
100
2.50
80
2.40
TEMPERATURE
60
DERATING
2.30
2.20
40
2.10
20
2.00
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
INPUT VOLTAGE (V)
0
-40 -15
10
35
60
85
TEMPERATURE (°C)
1x MODE OPERATING WAVEFORMS
(VIN = 4.0V)
MAX8630W/X toc09
1.5x MODE OPERATING WAVEFORMS
(VIN = 3.6V)
MAX8630W/X toc10
VOUT
200mV/div
(AC-COUPLED)
VOUT
200mV/div
(AC-COUPLED)
VIN
200mV/div
(AC-COUPLED)
VIN
200mV/div
(AC-COUPLED)
IIN
100mA/div
IIN
100mA/div
1μs/div
1μs/div
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