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参数资料
| 型号： | MAX17499BEUB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/18页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST ISO PWM 10-UMAX |
| 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： | 625kHz |
| 占空比： | 75% |
| 电源电压： | 9.5 V ~ 24 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
Current-Mode PWM Controllers with
Programmable Switching Frequency
ABSOLUTE MAXIMUM RATINGS
IN to GND ...............................................................-0.3V to +30V
IN Clamp (internal shunt) Current .........................................5mA
V CC to GND ............................................................-0.3V to +13V
FB, COMP, UVLO/EN, RT, CS to GND .....................-0.3V to +6V
UFLG to GND .........................................................-0.3V to +30V
NDRV to GND.............................................-0.3V to (V CC + 0.3V)
Continuous Power Dissipation (T A = +70°C)
10-Pin μMAX (derate 5.6mW/°C above +70°C) ........444.4mW
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range ............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
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 IN = +12V (for MAX17500, bring V IN up to 23.6V for startup), 10nF bypass capacitors at IN and V CC , R12 = 15k Ω (MAX17499A/
MAX17500A), R12 = 7.5k Ω (MAX17499B/MAX17500B), R15 = 1k Ω , C6 = 100nF (see the Typical Application Circuit), NDRV = open,
V UVLO/EN = +1.4V, V FB = +1.0V, COMP = open, V CS = 0V, T A = -40°C to +125°C, unless otherwise noted. Typical values are at T A =
+25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
UVLO/STARTUP
Bootstrap UVLO Wake-Up Level
Bootstrap UVLO Shutdown Level
UVLO/EN Wake-Up Threshold
UVLO/EN Shutdown Threshold
UVLO/EN Input Current
V SUVR
V SUVF
V ULR2
V ULF2
I UVLO
V IN rising (MAX17500 only)
V IN falling (MAX17500 only)
UVLO/EN rising
UVLO/EN falling
V UVLO/EN ≤ 2V
19.68
9.05
1.215
1.14
-50
21.6
9.74
1.23
1.17
23.60
10.43
1.245
1.20
+50
V
V
V
V
nA
UVLO/EN Hysteresis
60
mV
IN Supply Current In UVLO
IN Input Voltage Range
UVLO/EN to UFLG Propagation
Delay (Figure 3)
UVLO/EN to NDRV Propagation
I START
V IN
t EXTR
V IN = 19V, MAX17500 only when in
bootstrap UVLO
MAX17499 only
UVLO/EN steps up from 1V to 1.4V
UVLO/EN steps down from 1.4V to 1V
UVLO/EN steps up from 1V to 1.4V
9.5
50
3
0.6
3
90
24.0
10
μA
V
μs
ms
Delay (Figure 3)
t EXTF
UVLO/EN steps down from 1.4V to 1V
150
210
300
μs
Bootstrap UVLO Propagation
Delay
UFLG Low Output Voltage
t BUVR
t BUVF
V UFLG
V IN steps up from 9V to 24V (MAX17500
only)
V IN steps down from 24V to 9V
(MAX17500 only)
I UFLG = 5mA sinking
5
1
1.5
μs
V
UFLG High Output Leakage
Current
V UFLG = 25V
0.1
1
μA
INTERNAL SUPPLY
V CC Regulator Set Point
IN Supply Current After Startup
Shutdown Supply Current
V CCSP
I IN
V IN = 10.8V to 24V, sinking 1μA to 20mA
from V CC
V IN = 24V
UVLO/EN = low
7.0
2
50
10.5
4
90
V
mA
μA
2
_______________________________________________________________________________________
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