MAX8595XETA-T 查看數據表（PDF） - Maxim Integrated
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MAX8595XETA-T
Maxim Integrated
MAX8595XETA-T Datasheet PDF : 10 Pages
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High-Efficiency, 36V Step-Up Converters
with TA Derating Option for 2 to 9 White LEDs
Typical Operating Characteristics
(Circuit of Figure 1, VIN = 3.6V, ILED = 25mA, L = 22µH, CIN = 2.2µF, COUT = 0.1µF, CCOMP = 0.1µF, RSENSE = 13Ω, 4 LEDs, TA = +25°C,
unless otherwise noted.)
EFFICIENCY
vs. INPUT VOLTAGE
100
95
90 3 LEDs
85
80
75
4 LEDs
70
6 LEDs
65
60
8 LEDs
55
50
2
3
4
5
6
INPUT VOLTAGE (V)
EFFICIENCY
vs. LED CURRENT
90
6 LEDs
85
80
8 LEDs 3 LEDs
75
70
65
60
0
5 10 15 20 25 30
LED CURRENT (mA)
LED CURRENT
vs. DIRECT-PWM DIMMING
30
25
20
15
10
5
0
0
20
40
60
80
100
DUTY CYCLE (%)
LED CURRENT
vs. AMBIENT TEMPERATURE
26
24 MAX8596,
22 ILED = 25mA AT TA = +25°C
20
18
MAX8595,
16
ILED = 15mA
14
12
10
8
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
SWITCHING WAVEFORMS
MAX8595X toc05
VIN
20mV/div
AC-COUPLED
VLX
10V/div
VOUT
200mV/div
AC-COUPLED
IL
100mA/div
500ns/div
SOFT-START AND SHUTDOWN RESPONSE
MAX8595X toc06
VCTRL
2V/div
0
IIN
100mA/div
0
ILED
40mA/div
0
VOUT
10V/div
0
20ms/div
4 _______________________________________________________________________________________
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