参数资料
型号: MAX17014ETM+T
厂商: Maxim Integrated Products
文件页数: 9/33页
文件大小: 0K
描述: IC PWR SUPPLY MULT-OUTPUT 48TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
应用: LCD 电视机/监控器
电流 - 电源: 8mA
电源电压: 8 V ~ 16.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 48-WFQFN 裸露焊盘
供应商设备封装: 48-TQFN-EP(7x7)
包装: 带卷 (TR)
Low-Cost Multiple-Output
Power Supply for LCD TVs
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V IN = V IN2 = 12V, AV DD = V OVIN = V SUP = 15V, T A = -40°C to +85°C . Typical values are at T A = +25°C, unless
otherwise noted.) (Note 4)
PARAMETER
MODE Voltage Threshold for Enabling
DRN Switch Control in Mode 2
MODE Current-Source Stop Voltage
Threshold
THR-to-GON Voltage Gain
CONDITIONS
GON connects to DRN, V MODE rising edge
MODE rising edge
MIN
1.2
2
9.4
TYP
MAX
1.4
3
10.6
UNITS
V
V
V/V
SEQUENCE CONTROL
EN1, EN2 Input Low Voltage
EN1, EN2 Input High Voltage
SWITCHING FREQUENCY SELECTION
1.6
0.6
V
V
FSEL Input Low Voltage
FSEL Input High Voltage
600kHz
1.2MHz
1.6
0.6
V
V
Note 2: When the inductor is in continuous conduction (EN2 = VL or heavy load), the output voltage has a DC regulation level lower than
the error comparator threshold by 50% of the output voltage ripple. In discontinuous conduction (EN2 = GND with light load), the
output voltage has a DC regulation level higher than the error comparator threshold by 50% of the output voltage ripple.
Note 3: Disables boost switching if either SUP, SWI, or OVIN exceeds the threshold. Switching resumes when no threshold is exceeded.
Note 4: Specifications to -40°C are guaranteed by design, not production tested.
Typical Operating Characteristics
(Circuit of Figure 1. V IN = V INL = V SUP = 12V, AV DD = 16V, V GON = 34.5V, V GOFF = -6V, V OUT1 = 3.3V, T A = +25°C, unless other-
wise noted.)
85
STEP-DOWN REGULATOR EFFICIENCY
vs. LOAD CURRENT
3.350
STEP-DOWN REGULATOR
OUTPUT VOLTAGE vs. LOAD CURRENT
EN1 = VL, EN2 = GND
STEP-DOWN REGULATOR
LOAD TRANSIENT RESPONSE
MAX17014 toc03
80
75
EN1 = VL, EN2 = GND
3.325
3.300
A
3.3V
70
3.275
2A
65
0.1A
B
60
55
50
EN1 = VL, EN2 = VL
3.250
3.225
3.200
EN1 = VL, EN2 = VL
C
0A
0.01
0.1
1
10
0
0.40
0.80
1.20
1.60
2.00
2.40
10 μ s/div
LOAD CURRENT (A)
LOAD CURRENT (A)
A: V OUT , 100mV/div
B: LOAD CURRENT, 2A/div
C: INDUCTOR CURRENT, 1A/div
_______________________________________________________________________________________
9
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