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参数资料
| 型号： | L6910G |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | SO-16 |
| 文件页数： | 15/26页 |
| 文件大小： | 1046K |
| 代理商： | L6910G |
L6910G
22/26
10 APPLICATION IDEA 3: BUCK-BOOST REGULATOR 3V TO 5.5V INPUT/-5V
3A OUTPUT
In applications where a negative output voltage is required, a standard Buck-Boost topology can be implement-
ed. The considerations related to the maximum output current are the same of the "Positive Buck-Boost" (Ap-
plication Idea 2).
A particularity of this topology is that the device undergoes a voltage that is the sum of VIN and VOUT. So, con-
verting 5V to -5V, the device undergoes 10V voltage. It must be checked that the sum of the input and output
voltage is lower than the maximum operating input voltage of the device.
Figure 30. buck-boost regulator 3V to 5.5V input / -5V 3A Output Circuit
Table 12. Part List
Reference
Description
Manufacturer
R1
910 Ohm 5% 125mW
NEOHM
SMD 0805
R2
10K 5% 125mW
NEOHM
SMD 0805
R3
4.7K 5% 125mW
NEOHM
SMD 0805
R4
1K Ohm 5% 125mW
NEOHM
SMD 0805
R5
2.7K 5% 125mW
NEOHM
SMD 0805
R6
1K 5% 125mW
NEOHM
SMD 0805
R7
10 Ohm 5% 125mW
NEOHM
SMD 0805
C1,C2
100
F - 20V
OSCON 20SA100M
RADIAL 10X10.5
C13,C14
330
F - 6.3V
POSCAP 6TPB330M
SMD7343
C12,C4,C5,C8
100nF
KEMET
SMD0805
C3
1nF
KEMET
SMD0805
C6
4.7
F - 16V
AUX
SMA6032
C7
100nF
KEMET
L1
R1
C1- C2
C3
C13
-
14
Q2
Q1
D2
C6
13
14
10
11
3
1
U1
L6910/A
VIN (3V to 5.5V )
VOUT (-5V 3A)
6
12
5
4
2
15
7
9
VCC
GND
VREF
SS
OSC
OCSET
UGATE
PHASE
LGATE
PGND
PGOOD
VF
B
COMP
C9
C8
C4
D1
GNDOUT
C7
C5
R7
C10
C12
8
GNDIN=GNDOUT
R5
R3
R4
C11
R6
EAREF
BOOT
G1
VCC (5V)
GNDCC
L1
R1
C1- C2
C3
C13
-
14
Q2
Q1
D2
C6
13
14
10
11
3
1
U1
L6910/A
VIN (3V to 5.5V )
VOUT (-5V 3A)
6
12
5
4
2
15
7
9
VCC
GND
VREF
SS
OSC
OCSET
UGATE
PHASE
LGATE
PGND
PGOOD
VF
B
COMP
C9
C8
C4
D1
GNDOUT
C7
C5
R7
C10
C12
8
GNDIN=GNDOUT
R5
R3
R4
C11
R6
EAREF
BOOT
G1
VCC (5V)
GNDCC
L1
R1
C1- C2
C3
C13
-
14
Q2
Q1
D2
C6
13
14
10
11
3
1
U1
L6910/A
VIN (3V to 5.5V )
VOUT (-5V 3A)
6
12
5
4
2
15
7
9
VCC
GND
VREF
SS
OSC
OCSET
UGATE
PHASE
LGATE
PGND
PGOOD
VF
B
COMP
C9
C8
C4
D1
GNDOUT
C7
C5
R7
C10
C12
8
GNDIN=GNDOUT
R5
R3
R4
C11
R6
EAREF
BOOT
G1
VCC (5V)
GNDCC
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相关代理商/技术参数 |
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| L6910GTR | 功能描述:电压模式 PWM 控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| L6910R | 功能描述:DC/DC 开关控制器 5.0 to 12V Step-Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6910RTR | 功能描述:DC/DC 开关控制器 5.0 to 12V Step-Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6910S | 功能描述:DC/DC 开关控制器 5.0 to 12V Step-Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6910STR | 功能描述:DC/DC 开关控制器 5.0 to 12V Step-Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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