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参数资料
| 型号： | MAX1677EEE-T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BST SYNC 0.35A DL 16QSOP |
| 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： | 两者兼有 |
| 输出数： | 2 |
| 输出电压： | 3.3V 或可调主电源，-28 V ~ 28 V 或可调副电源 |
| 输入电压： | 0.7 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 300kHz |
| 电流 - 输出： | 350mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-QSOP |
Compact, High-Efficiency, Dual-Output
Step-Up and LCD Bias DC-DC Converter
ELECTRICAL CHARACTERISTICS
(V OUT = 3.3V, C REF = 0.1μF, POUT = OUT, T A = -40 ° C to +85 ° C , unless otherwise noted. ) (Note 5)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX
UNITS
GENERAL
Supply Current
Main DC On, LCD Off
Supply Current All On,
Main DC-DC in PFM Mode
Supply Current All On,
Main DC-DC in PWM Mode
Supply Current in Shutdown
I LCDOFF
I PFM
I PWM
No load, current into OUT
No load, current into OUT
No load, current into OUT
40
60
300
5
μA
μA
μA
μA
MAIN
Output Voltage
FB Regulation Voltage
Startup to Normal Mode Transition
Voltage (Note 4)
LX Leakage Current
LX Current Limit
Internal Oscillator
External Clock Frequency Range
V OUT
V FB(REG)
V LOCKOUT
I LX(LEAK)
I LX(PWM)
I LX(PFM)
f
FB = GND, 0 ≤ I LX ≤ 350mA,
CLK/SEL = OUT (Note 3)
Adjustable mode, CLK/SEL = OUT (Note 3)
N-channel PWM mode
N-channel PFM mode
CLK/SEL = OUT
3.17
1.22
2.1
550
250
240
200
3.46
1.28
2.4
5
900
500
360
400
V
V
V
μA
mA
kHz
kHz
LOGIC
ON Input Threshold
V ON(LOW)
V ON(HIGH)
1.1V < V OUT < 5.5V
0.8V OUT
0.2V OUT
V
LCDON, LCDPOL, CLK/SEL
Input Threshold
LBI Falling Threshold
LBO Output Low Voltage
V IL
V IH
V LBI(TH)
V LBO (LO)
Sink current = 1mA
0.8V OUT
599
0.2V OUT
629
0.1
V
mV
V
LCD BIAS DC-DC
LCDPOL = OUT or GND
300
450
LCDLX Switch Current Limit
LCDFB Set Point
LCDPOL connected to OUT or GND
through 50k ?
Positive LCD, LCDPOL = OUT
Negative LCD, LCDPOL = GND
150
1.22
-20
300
1.28
+20
mA
V
mV
Note 1: The MAX1677 operates in bootstrap mode (operates from the output voltage). Once started, it will operate down to 0.7V
input. If V IN exceeds the set V OUT , V OUT will follow one diode drop below V IN .
Note 2: C REF = 0.22μF for applications where I REF > 10μA.
Note 3: In low-power mode (CLK/SEL = GND), the output voltage regulates 1% higher than in low-noise mode (CLK/SEL = OUT or
synchronized).
Note 4: The device is in a startup mode when V OUT is below this value.
Note 5: Specifications to -40 ° C are guaranteed by design and not production tested.
4
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