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| 型号： | MAX17067EUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 0.3A 8UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.25 V ~ 18 V |
| 输入电压： | 2.6 V ~ 4 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 640kHz，1.2MHz |
| 电流 - 输出： | 300mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-uMAX |
Low-Noise Step-Up DC-DC Converter
Application Circuits
1-Cell to 3.3V SEPIC Power Supply
Figure 3 shows the MAX17067 in a single-ended primary
inductance converter (SEPIC) topology. This topology is
useful when the input voltage can be either higher or
lower than the output voltage, such as when converting
a single lithium-ion (Li+) cell to a 3.3V output. L1A and
V IN
2.6V TO 4.0V
SHDN
IN
L1A
5.3 μ H
LX
C2
10 μ F
D1
C1
10 μ F
10V
V OUT
3.3V
L1B are two windings on a single inductor. The coupling
capacitor between these two windings must be a low-
ESR type to achieve maximum efficiency, and must also
be able to handle high ripple currents. Ceramic capaci-
tors are best for this application. The circuit in Figure 3
provides 400mA output current at 3.3V output when
operating with an input voltage from +2.6V to +4.0V.
MAX17067
FREQ
GND
SS
L1B
5.3 μ H
C OUT
22 μ F
20V
AMLCD Application
Figure 4 shows a power supply for active matrix (TFT-
LCD) flat-panel displays. Output-voltage transient per-
formance is a function of the load characteristic. Add or
remove output capacitance (and recalculate compen-
0.027 μ F
C COMP2
R COMP
CC
FB
R2
605k Ω
R1
1M Ω
sation-network component values) as necessary to
meet transient performance. Regulation performance
C COMP
L1 = CTX8-1P
for secondary outputs (VGOFF and VGON) depends on
the load characteristics of all three outputs.
C OUT = TPSD226025R0200
Figure 3. MAX17067 in a SEPIC Configuration
VGOFF
-9V
1
D4
C9
0.1 μ F
C11
0.1 μ F
D2
2
VGON
+27V
C14
3
3
4.7 μ F
2
C10
0.1 μ F
D3
1
2
C12
1 μ F
C13
1 μ F
V IN
3
2.6V TO 4.0V
L1
3.3 μ H
D1
1
V OUT
+9V/250mA
C1
10 μ F
10V
R3
10 Ω
C4
1 μ F
R6
100k Ω
6
IN
U1
MAX17067
LX
5
C7
10 μ F
25V
C15
27nF
3
SHDN
7
FREQ
8 SS
COMP
1
R5
121k Ω
GND
FB
4
2
C6
OPEN
R1
274k Ω
R2
44.2k Ω
C5
620pF
Figure 4. Multiple-Output, Low-Profile (1.2mm max) TFT-LCD Power Supply
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