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参数资料
| 型号： | MAX1541ETL+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/49页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR DIVIDER PWM 40-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| PWM 型： | 电流模式 |
| 输出数： | 2 |
| 频率 - 最大： | 620kHz |
| 占空比： | 100% |
| 电源电压： | 2 V ~ 28 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 是 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 包装： | 管件 |
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Dual Step-Down Controllers with Saturation
Protection, Dynamic Output, and Linear Regulator
ABSOLUTE MAXIMUM RATINGS
V+, LDOON to GND ...............................................-0.3V to +28V
LDOOUT to GND (MAX1540A, Note 1)....................-0.3V to +6V
LDOOUT to GND (MAX1541, Note 1) ....................-0.3V to +28V
V DD to GND (MAX1541, Note 1) ..............................-0.3V to +6V
V CC , ON_ to GND.....................................................-0.3V to +6V
SKIP , PGOOD_ to GND............................................-0.3V to +6V
FB_, CSP_, ILIM_ to GND.........................................-0.3V to +6V
TON, OVP/UVP, LSAT to GND ...................-0.3V to (V CC + 0.3V)
REF, OUT_ to GND.....................................-0.3V to (V CC + 0.3V)
LDOIN to GND (MAX1541).....................................-0.3V to +28V
REFIN1, GATE, OD, FBLDO to GND (MAX1541).....-0.3V to +6V
FBLANK, CC1 to GND (MAX1541).............-0.3V to (V CC + 0.3V)
DL_ to GND (Note 1) ..................................-0.3V to (V DD + 0.3V)
DH_ to LX_..................................................-0.3V to (BST + 0.3V)
LX_ to GND................................................................-2V to +30V
BST_ to LX_ ..............................................................-0.3V to +6V
REF Short Circuit to GND ...........................................Continuous
Continuous Power Dissipation (T A = +70 ° C)
32-Pin 5mm x 5mm Thin QFN (derated 21.3mW/ ° C
above +70 ° C).............................................................1702mW
40-Pin 6mm x 6mm Thin QFN (derated 26.3mW/ ° C
above +70 ° C).............................................................2105mW
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
CSN_ to GND ............................................................-2V to +30V
Note 1: For the MAX1540A, the gate-driver input supply (V DD ) is internally connected to the fixed 5V linear-regulator output
(LDOOUT), and the linear-regulator input supply (LDOIN) is internally connected to the battery voltage input (V+).
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+ = 15V, V CC = V DD = ON1 = ON2 = 5V, SKIP = GND, LDOIN (MAX1541) = V+, 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
INPUT SUPPLIES (Note 1)
V IN
MAX1540A: battery voltage, V+ > V LDOOUT
MAX1541: battery voltage, V+ > V LDOOUT
5.5
2
28
28
Input Voltage Range
V BIAS
V LDOIN
V CC, V DD (MAX1541)
MAX1541: LDO input supply,
V LDOIN > V LDOOUT
4.5
4.5
5.5
28
V
FB1 and FB2 forced above the regulation
point, LSAT = GND
0.7
1.5
Quiescent Supply Current (V CC )
I CC
FB1 and FB2 forced above the regulation
point, ON1 or ON2 = V CC , V LSAT > 0.5V
1.8
mA
Quiescent Supply Current
(V DD , MAX1541 Only)
I DD
FB1 and FB2 forced above the regulation
point, ON1 or ON2 = V CC
<1
5
μA
MAX1540A: FB1 and FB2 forced above the
regulation point, ON1 or ON2 = V CC ,
150
Quiescent Supply Current (V+)
I V+
V LDOON = V+ = 28V
MAX1541: ON1 or ON2 = V CC ,
V LDOON = V+ = 28V
25
40
μA
Quiescent Supply Current
(LDOIN, MAX1541 Only)
I LDOIN
FB1 and FB2 forced above the regulation
point, ON1 or ON2 = V CC ,
V LDOON = V+ = 28V
110
μA
Standby Supply Current (V CC )
ON1 = ON2 = GND, V LDOON = V+ = 28V
<1
5
μA
2
_______________________________________________________________________________________
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