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| 型号： | MAX1536ETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/19页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 3.6A 28TQFN |
| 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： | 0.7 V ~ 5.5 V |
| 输入电压： | 3 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 1.4MHz |
| 电流 - 输出： | 3.6A |
| 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： | 28-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
3.6A, 1.4MHz, Low-Voltage, Internal-Switch Step-
Down Regulator with Dynamic Output Voltage Control
ABSOLUTE MAXIMUM RATINGS
V CC , IN, SHDN , SKIP to AGND ................................-0.3V to +6V
OD, OD , GATE, PGOOD to AGND...........................-0.3V to +6V
COMP, FB, REF to AGND.........................................-0.3V to +6V
TOFF, REFIN, FBLANK to AGND .............................-0.3V to +6V
IN to V CC ...............................................................-0.3V to +0.3V
PGND to AGND .................................................... -0.3V to +0.3V
LX to PGND ................................................ -0.3V to (V IN + 0.3V)
Continuous Power Dissipation (T A = +70°C)
28-Pin Thin QFN (derated 20.8mW/°C above +70°C;
part mounted on 1in 2 of 1oz copper) .........................1667mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
LX Current (Note 1).............................................................±5.7A
REF Short Circuit to AGND.........................................Continuous
Note 1: LX has clamp diodes to PGND and IN. Thermal limits dictate the maximum continuous current through these diodes.
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
(Circuit of Figure 1, V IN = V CC = V SHDN = +3.3V, V REFIN = +1.5V, SKIP = AGND, T A = 0°C to +85°C , unless otherwise noted. Typical
values are at T A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PWM CONTROLLER
Input Voltage
Output Adjust Range
V IN , V CC
V OUT
3.0
V REFIN
5.5
V IN
V
V
Feedback Voltage Accuracy
V FB -
V REFIN
V CC = V IN = +3.0V to
+5.5V, I LOAD = 0
T A = +25°C to +85°C
T A = 0°C to +85°C
-3
-4
0
0
+3
+4
mV
Feedback Load Regulation
I LOAD = 0 to 3.5A, V CC = V IN = +3.0V to +5.5V,
SKIP = V CC
0.3
%
FB Input Bias Current
Dropout
PMOS Switch On-Resistance
NMOS Switch On-Resistance
I FB
V DO
R PMOS
R NMOS
V FB = 1.01 × V REFIN
V CC = V IN = +3.0V, I LOAD = 3A, FB = AGND
V CC = V IN = +4.5V, I LOAD = 0.5A
V CC = V IN = +3.0V, I LOAD = 0.5A
V CC = V IN = +4.5V, I LOAD = 0.5A
V CC = V IN = +3.0V, I LOAD = 0.5A
-50
189
54
63
47
53
+50
330
90
110
80
90
nA
mV
m ?
m ?
Maximum Output Current
I OUT(RMS) (Note 2)
3.6
A
Current-Limit Threshold
Idle Mode Current Threshold
I LIMIT
(Note 3)
SKIP = AGND
4.0
0.21
4.8
0.60
5.5
1.00
A
A
Zero-Cross Current Threshold
SKIP = AGND
200
mA
Switching Frequency
f SW
(Note 2)
R TOFF = 30.1k ?
0.24
0.30
1.4
0.37
MHz
Off-Time
t OFF
V FB ≥ 0.3 × V REFIN
R TOFF = 110k ?
0.85
1.00
1.15
μs
R TOFF = 499k ?
3.8
4.5
5.2
Extended Off-Time
V FB < 0.3 × V REFIN
4 × t OFF
μs
On-Time
Soft-Start Time
t ON
(Note 2)
(Note 3)
0.3
3 × 256
μs
Cycles
Quiescent Supply Current
I CC + I IN
SKIP = AGND, V FB = 1.01 × V REFIN
350
750
μA
2
_______________________________________________________________________________________
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