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参数资料
| 型号： | MAX8625AETD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BST SYNC 0.8A 14TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 3.3V，1.25 V ~ 4 V |
| 输入电压： | 2.5 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 800mA |
| 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： | 14-WFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 14-TDFN-EP（3x3） |
| 其它名称： | MAX8625AETD+TDKR |
High-Efficiency, Seamless Transition,
Step-Up/Down DC-DC Converter
ELECTRICAL CHARACTERISTICS (continued)
(V IN = 3.6V, ON = SKIP = IN, FB = GND, V OUT = 3.3V, LX_ unconnected, C REF = C5 = 0.1μF to GND, Figure 4. T A = -40°C to +85°C.
Typical values are at T A = +25°C, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
FB Dual-Mode Threshold
FB Leakage Current
V FBDM
I FB
V FB = 1.3V, T A = +25°C
V FB = 1.3V, T A = +85°C
75
100
0.001
0.01
125
0.1
mV
μA
ON, SKIP Input High Voltage
ON, SKIP Input Low Voltage
V IH
V IL
2.5V < V IN < 5.5V
2.5V < V IN < 5.5V
1.6
0.45
V
V
ON Input Leakage Current
I IHL
2.5V < V IN < 5.5V, T A = +25°C
T A = +85°C
0.001
0.01
1
μA
SKIP Input Leakage Current
Peak Current Limit
I SKIPH
I SKIPL
I LIMP
V SKIP = 3.6V
V SKIP = 0V
LX1 PMOS
-2
1700
3
-0.2
2000
12
2300
μA
mA
Fault Latch-Off Delay
Each MOSFET, T A = +25°C
100
0.05
0.1
ms
MOSFET On-Resistance
Rectifier-Off Current Threshold
Idle-Mode Current Threshold
(Note 4)
R ON
I LX1OFF
I SKIP
Each MOSFET, V IN = 2.5V to 5.5V,
T A = -40°C to +85°C
SKIP = GND
SKIP = GND, load decreasing
Load increasing
125
100
300
0.2
?
mA
mA
LX1, LX2 Leakage Current
I LXLKG
V IN = V OUT = 5.5V, V LX1 = 0V to V IN ,
V LX2 = 0V to V OUT , T A = +25°C
0.01
1
μA
T A = +85°C
0.2
Out Reverse Current
I LXLKGR
V IN = V LX1 = V LX2 = 0V, V OUT = 5.5V,
measure I (LX2), T A = +25°C
0.01
1
μA
T A = +85°C
0.5
Minimum T ON
T ONMIN
25
%
OSC Frequency
Thermal Shutdown
F OSCPWM
15°C hysteresis
850
1000
+165
1150
kHz
°C
Note 2: The device is production tested at T A = +25°C. Specifications over the operating temperature range are guaranteed by
design and characterization.
Note 3: Limits are guaranteed by design and not production tested.
Note 4: The idle-mode current threshold is the transition point between fixed-frequency PWM operation and idle-mode operation.
The specification is given in terms of output load current for an inductor value of 3.3μH. For the step-up mode, the idle-mode
transition varies with input to the output-voltage ratios.
_______________________________________________________________________________________
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