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| 型号： | AS1310-BTDT-25 |
| 厂商： | ams |
| 文件页数： | 11/20页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST 2.5V 60MA 8TDFN |
| 标准包装： | 1 |
| 类型： | 升压（升压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 2.5V |
| 输入电压： | 0.7 V ~ 3.6 V |
| 电流 - 输出： | 60mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-UFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 8-TDFN（2x2） |
| 其它名称： | AS1310-BTDT-25DKR |
AS1310
Datasheet - D e t a i l e d D e s c r i p t i o n
Energy stored during the on time is given by:
E = 0.5 L ( I PK )
2
Joules (Region A in Figure 13 )
(EQ 6)
If the overall time period (T ON + T OFF ) is T, the power taken from the input is:
0.5 L ( I PK )
P IN = --------------------------- Watts
T
2
(EQ 7)
Assume output power is 0.8 P IN to establish an initial value of operating period T.
T WAIT is determined by the time taken for the output voltage to fall to 0.99xV OUT . The longer the wait time, the lower will be the supply current of
the converter. Longer wait times require increased output capacitance. Choose T WAIT = 10% T as a minimum starting point for maximum energy
transfer. For very low power load applications, choose T WAIT ≥ 50% T.
8.1.3
Output Loop Timing
The output loop consists of the main inductor, P-channel synchronous switch (or diode if fitted), output capacitor and load. When the input loop is
interrupted, the voltage on the LX pin rises (Lenz’s Law). At the same time a comparator enables the synchronous switch, and energy stored in
the inductor is transferred to the output capacitor and load. Inductor peak current supports the load and replenishes the charge lost from the
output capacitor. The magnitude of the current from the inductor is monitored, and as it approaches zero, the synchronous switch is turned off.
No switching action continues until the output voltage falls below the output reference point (0.99 x V OUT ).
Output power is composed of the dc component (Region C in Figure 13 ):
P REGION_C = V IN -------- -------------
0.5 L ( I PK )
P REGION_B = ---------------------------
0.5 L ( I PK )
I PK T OFF
P TOTAL = V IN -------- ------------- + ---------------------------
I PK = -------------------
V IN T ON
P TOTAL = ---------------------- ( 0.9 T )
V OUT
P OUT = -----------------
2
V IN T ON
----------------- = ---------------------- ( 0.9 T ) η
R LOAD
2 T
Output power is also composed of the inductor component (Region B in Figure 13 ), neglecting efficiency loss:
2
T
Total power delivered to the load is the sum of (EQ 8) and (EQ 9) :
2
2 T T
From (EQ 3) (using nominal values) peak current is given by:
T ON V IN
L
Substituting (EQ 11) into (EQ 10) and re-arranging:
2
2 TL
0.9T incorporates a wait time T WAIT = 10% T
Output power in terms of regulated output voltage and load resistance is:
2
R LOAD
Combining (EQ 12) and (EQ 13) :
2
V OUT
2 TL
(EQ 8)
(EQ 9)
(EQ 10)
(EQ 11)
(EQ 12)
(EQ 13)
(EQ 14)
Symbol η reflects total energy loss between input and output and is approximately 0.8 for these calculations. Use (EQ 14) to plot duty cycle
(T ON /T) changes for various output loadings and changes to V IN .
www.austriamicrosystems.com/DC-DC_Step-Up/AS1310
Revision 1.8
10 - 19
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| AS1310-BTDT-27 | 功能描述:IC REG BOOST 2.7V 60MA 8TDFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:MIC23xxx HyperLight Load™ Regulators 标准包装:5,000 系列:HyperLight Load® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.8V 输入电压:2.7 V ~ 5.5 V PWM 型:混合物 频率 - 开关:4MHz 电流 - 输出:2A 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘，8-MLF? 包装:带卷 (TR) 供应商设备封装:8-MLF?（2x2） 产品目录页面:1094 (CN2011-ZH PDF) 其它名称:576-3303-2 |
| AS1310-BTDT-30 | 功能描述:IC REG BOOST 3V 60MA 8TDFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:MIC23xxx HyperLight Load™ Regulators 标准包装:5,000 系列:HyperLight Load® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.8V 输入电压:2.7 V ~ 5.5 V PWM 型:混合物 频率 - 开关:4MHz 电流 - 输出:2A 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘，8-MLF? 包装:带卷 (TR) 供应商设备封装:8-MLF?（2x2） 产品目录页面:1094 (CN2011-ZH PDF) 其它名称:576-3303-2 |
| AS1310-BTDT-33 | 制造商:ams 功能描述:Low Q Current DC/DC Step-Up Converter IC |
| AS1310-BTDT-331 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:Ultra Low Quiescent Current, Hysteretic DC-DC Step-Up Converter |
| AS1310-BTDT-xx2 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:Ultra Low Quiescent Current, Hysteretic DC-DC Step-Up Converter |
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