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| 型号： | MAX8505EEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/15页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 3A 16QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 4.68 V |
| 输入电压： | 2.6 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 500kHz，1MHz |
| 电流 - 输出： | 3A |
| 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 |
3A, 1MHz, 1% Accurate, Internal Switch
Step-Down Regulator with Power-OK
ELECTRICAL CHARACTERISTICS
(V IN = V CC = V CTL = +3.3V, V FB = 0.8V, V COMP = 1.25V, C REF = 0.01μF, T A = -40°C to +85°C , unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
IN AND V CC
IN Voltage Range
V CC Voltage Range
V IN
2.25
2.6
V CC
5.5
V
V
IN Supply Current
V CC Supply Current
I IN
I CC
Switching with no load
Switching with no load
V IN = 3.3V
V CC = 3.3V
10
10
mA
mA
Total Shutdown Current into IN
and V CC
I SHDN
V IN = V CC = V BST - V LX = 5.5V, V CTL = 0V,
V LX = 0V
50
μA
V CC Undervoltage Lockout
Threshold
UVLO th
When LX starts/stops
switching
V CC rising
V CC falling
2.2
2.55
V
REF
REF Voltage
REF Shutdown Resistance
REF Soft-Start Current
V REF
I REF = 0μA, V IN = V CC = 2.6V to 5.5V
From REF to GND, V CTL = 0V
V REF = 0.4V
0.791
20
0.808
100
30
V
?
μA
FB
FB Regulation Voltage
FB Input Bias Current
Maximum Output Current
V FB
I OUT_MAX
V IN = 2.6V to 5.5V
V FB = 0.7V
V IN = V CC = 3.3V, V OUT = 1.2V,
L = 1μH/5.9m ? (Note 1)
0.791
3
0.808
0.1
V
μA
A
FB Threshold for POK Transition
FB rising or falling
FB high
FB low
10.5
-13.5
13.5
-10.5
%
COMP
COMP Transconductance
COMP Clamp Voltage, Low
COMP Clamp Voltage, High
COMP Shutdown Resistance
From FB to COMP
V IN = V CC = 2.6V, 3.3V, 5.5V, V FB = 0.9V
V IN = V CC = 2.6V, 3.3V, 5.5V, V FB = 0.7V
From COMP to GND, V CTL = 0V
60
0.45
1.7
160
1.00
2.1
100
μS
V
V
?
LX (All LX Outputs Connected Together)
LX On-Resistance, High
LX On-Resistance, Low
V IN = V BST - V LX = 3.3V
V IN = V BST - V LX = 3.3V
74
74
m ?
m ?
LX Current-Sense Transresistance
LX Current-Limit Threshold
R T
From LX to COMP
Sourcing, Typical Application Circuit
Sinking, V IN = V CC = 2.6V to 5.5V
0.068
4.6
-4.3
0.104
5.6
-1.0
?
A
LX Leakage Current
LX Switching Frequency
V IN = V CC = 5.5V,
V CTL = 0V
V IN = V CC = 2.6V,
3.3V, 5.5V
V LX = 5.5V
V LX = 0V
V CTL = V CC
V CTL = 2/3 ? V CC
-100
0.85
0.44
100
1.15
0.56
μA
MHz
LX Minimum Off-Time
V IN = V CC = 2.6V, 3.3V, 5.5V
95
135
ns
4
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