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TMI7105B

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产品编号
Vin Range (V):
8 to 30
Output Channels:
4
Iout (A):
3/ 1/ 0.3/ 0.3
Switching Frquency (Hz):
130k to 500k Adj./1.5M
VFB (V):
0.8/ 0.6/1.2/ 1.2
Iq of each Channel (μA):
9000/ 40/ 50/ 50
Functions:
1 Channel High Voltage Buck 1 Channel Low Voltage Buck 2 Channels Low Voltage LDO
Package:
QFN4x4-20
Status:
MP
数量
-
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库存:
0
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FEATURES
参数
GENERAL DESCRIPTION
APPLICATIONS
TYPICAL APPILCATION
  • High Voltage Input Buck Converter (BUCK1)

- Wide input voltage Range: 8V~30V
- 32V Input OVP Protection
- Up to 3A Output Current
- 130kHz~500kHz Adjustable Switching Frequency
- Adjustable Output Voltage with 0.8V VREF
- Cycle-by-cycle Current Limit
- Output Short Circuit Hiccup Protection

  • Low Voltage Input Buck Converter (BUCK2)

- 2.5V to 5.5V Input Voltage Range
- 1.0A Output Current
- 1.5MHz Constant Switching Frequency
- Output Voltage as Low as 0.6V
- 100% Duty Cycle in Dropout Mode
- Overcurrent Limit and Output Short Protection

  • Dual 600mA LDOs (LDO1 and LDO2)

- 2.5V to 5.5V Input Voltage Range
- 600mV @600mA Dropout Voltage
- Adjustable Output Voltage with 0.8V VREF
- Current Limit Protection
- Stable with 1μF Ceramic Output Capacitor
- Output Auto-Discharge in Shutdown

  • Thermal Shutdown Protection
  • RoHS Compliant and 100% Lead (Fb)-Free
  •  QFN 4mmx4mm 20 pin Package
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TMI7105B is single-chip power management IC integrating one wide input voltage and high efficiency synchronous Buck convert (BUCK1), one low voltage 1A synchronous Buck convert (BUCK2) and two 600mA low-dropout linear regulators (LDO1 and LDO2). BUCK1 operates in force PWM mode with adjustable switching frequency and provides up to 3A output current. Switching frequency can be set by external resistor. BUCK2 is 1.5MHz switching frequency current mode buck converter and it can run at 100% duty cycle for low dropout operation. BUCK2 offers PWM mode and PFM mode, which allows a high efficiency over the wider range of the load condition. LDO1 and LDO2 are designed to work with low-ESR ceramic capacitors, reducing the amount of the PCB area necessary for power applications. Only a 1μF ceramic output capacitor can make the device stable over the whole load range current (0mA to 600mA). Advanced production features include input UVLO, thermal shutdown, soft start and input and output OVP.

. Automotive Camera
. TV/Monitor
. Networking Systems

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2020-10-30 14:48:50
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