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| 型号： | MAX1639ESE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/13页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1.2MHz |
| 占空比： | 84% |
| 电源电压： | 4.5 V ~ 5.5 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
High-Speed Step-Down Controller with
Synchronous Rectification for CPU Power
ABSOLUTE MAXIMUM RATINGS
V DD , V CC , PWROK to AGND....................................-0.3V to +6V
PGND to AGND ..................................................................±0.3V
CSH, CSL to AGND ....................................-0.3V to (V CC + 0.3V)
DL to PGND................................................-0.3V to (V DD + 0.3V)
REF, CC1, CC2, FREQ, FB to AGND .........-0.3V to (V CC + 0.3V)
BST to PGND..........................................................-0.3V to +12V
BST to LX..................................................................-0.3V to +6V
Continuous Power Dissipation (T A = +70°C)
16-Pin Narrow SO (derate 8.70mW/°C above +70°C) ....696mW
SO θ JC ...........................................................................65°C/W
Operating Temperature Range
MAX1639ESE....................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
DH to LX.............................................(LX - 0.3V) to (BST + 0.3V)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V DD = V CC = +5V, PGND = AGND = 0V, FREQ = REF, T A = 0°C to +85°C , unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
FB Voltage
Includes line and load
regulation errors
T A = +25°C to +85°C
T A = 0°C to +85°C
1.089
1.083
1.111
1.117
V
Input Voltage Range
Input Undervoltage Lockout
V CC = V DD
V CC rising edge, 1% hysteresis
FB overdrive = 60mV
Operating
4.5
4.0
5.5
4.2
2.5
V
V
V CC Supply Current (I CC )
V CC = V DD
= 5.5V
mode
Shutdown
mode
FB overdrive = 0V
V REF = 0V
5
3.6
10
mA
V DD Supply Current (I DD )
V CC = V DD = 5.5V, FB forced 60mV above
regulation point, operating or standby mode
0.1
mA
Reference Voltage
Reference Load Regulation
Reference Undervoltage Lockout
Reference Short-Circuit Current
AC Load Regulation
DC Load Regulation
PWROK Trip Level
PWROK Output Voltage Low
PWROK Output Current High
Switching Frequency
No load
0μA < I REF < 100μA
Rising edge, 1% hysteresis
V REF = 0V
CSH - CSL = 0mV to 80mV
CSH - CSL = 0mV to 80mV
Rising FB, 1% hysteresis with respect to V REF
Falling FB, 1% hysteresis with respect to V REF
I SINK = 2mA, V CC = 4.5V
PWROK = 5.5V
FREQ = V CC
FREQ = REF
FREQ = AGND
3.465
2.7
0.5
-7.5
6.5
850
540
255
3.5
1
0.1
-6
8
1000
600
300
3.535
10
3.0
4.0
-4.5
9.5
0.4
1
1150
660
345
V
mV
V
mA
%
%
%
V
μA
kHz
Maximum Duty Cycle
FREQ Input Voltage
FREQ Input Voltage
FREQ = V CC
GND (low)
REF (mid)
85
3.3
90
0.2
3.7
%
V
V CC (high)
V CC - 0.1
2
_______________________________________________________________________________________
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