MAX8662 データシートの表示（PDF） - Maxim Integrated
部品番号
コンポーネント説明
一致するリスト
MAX8662 Datasheet PDF : 34 Pages
| |||
Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices
Typical Operating Characteristics (continued)
(Circuit of Figure 1, VDC = 5V, RPSET = 1.5kΩ, RISET = 3kΩ, VOUT1 = 3.3V, VOUT2 = 1.3V, SL1 = SL2 = open, VCEN = 0V, VPEN1 =
VPEN2 = 5V, COUT1 = 2 x 10µF, COUT2 = 2 x 10µF, COUT3 = 0.1µF, COUT4 = 4.7µF, COUT5 = 1µF, COUT6 = 2.2µF, COUT7 = 1µF, CT =
0.068µF, CREF = CVL = 0.1µF, RTHM = 10kΩ, L1 = 3.3µH, L2 = 4.7µH, L3 = 22µH, VGND = VPG1 = VPG2 = VPG3 = 0V, TA = +25°C,
unless otherwise noted.)
OUT2 ENABLE AND DISABLE RESPONSE
MAX8662 toc38
VCEN = VL
ROUT2 = 33I
LED CURRENT
vs. PWM DIMMING DUTY CYCLE
5.0
VBAT = 3.6V
4.5 VBRT = 0.25V
4.0 f = 1kHz
LED CURRENT vs. BRT VOLTAGE
30
VBAT = 3.6V
25
3.5
20
VOUT2
1V/div
3.0
2.5
15
IDC
200mA/div 2.0
10
1.5
VEN2
2V/div
1.0
5
0.5
400µs/div
0
0 10 20 30 40 50 60 70 80 90 100
DUTY CYCLE (%)
0
0
0.3
0.6
0.9
1.2
1.5
BRT VOLTAGE (V)
IL
VLX
VOUT3
AC-COUPLED
OUT3 SWITCHING WAVEFORMS
MAX8662/63 toc41
OUT3 ENABLE AND DISABLE RESPONSE
MAX8662 toc42
100mA/div
10V/div
VOUT3
IDC
VCEN = VL
OUT3 LOAD = 7 WLEDs
ILED = 30mA
VBAT = 4.0V
4.0V
COMPENSATION
AT CC3 = 1kI
IN SERIES WITH 0.22µF
10V/div
200mA /div
1µs/div
200mV/div VEN3
IOUT3 = 1mA
4ms/div
2V/div
OUT3 REGULATOR EFFICIENCY
vs. LOAD CURRENT
100
VSYS = 5.5V
90
VSYS = 4.2V
80
70
VSYS = 3.6V
60
50
40
30
20
10
0
0.1
1
10
100
LOAD CURRENT (mA)
OUT4 REGULATOR LOAD REGULATION
3.315
3.310
3.305
3.300
VIN = 3.6V
OUT4 REGULATOR LINE REGULATION
3.4
RLOAD = 330Ω
3.0
2.6
OUT4 VOLTAGE vs. TEMPERATURE
3.315
3.313
VBAT = 4.0V
RLOAD = 330Ω
3.311
3.295
2.2
3.290
VIN = 5.5V
1.8
3.285
3.309
3.307
3.280
0
100 200 300 400 500
LOAD CURRENT (mA)
1.4
1
2
3
4
5
6
VIN_OUT4 (V)
3.305
-40 -15
10
35
60
85
AMBIENT TEMPERATURE (°C)
_____________________________________________________________________________________ 13
Share Link: 