LM48560 Texas instruments

LM48560

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LM48560

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Описание

The LM48560 device is a high voltage, high efficiency, Class H driver for ceramic speakers and piezo actuators. The LM48560 devices Class H architecture offers significant power savings compared to traditional Class AB amplifiers. The device provides 30 VPP output drive while consuming just 4 mA of quiescent current from a 3.6 V supply. The LM48560 device features TIs unique automatic level control (ALC) that provides output limiter functionality. The LM48560 device features two fully differential inputs with separate gain settings, and a selectable control interface. In software control mode, the gain control and device modes are configured through the I2C interface. In hardware control mode, the gain and input mux are configured through a pair of logic inputs. The LM48560 device has a low power shutdown mode that reduces quiescent current consumption to 0.1 µA. The LM48560 device is available in an ultra-small 16-bump DSBGA package (1.97 mm × 1.97 mm).

Class H Topology
Integrated Boost Converter
Bridge-Tied Load (BTL) Output
Selectable Differential Inputs
Selectable Control Interfaces
- (Hardware or Software mode)
I²C Programmable ALC
Low Supply Current
Minimum External Components
Micro-Power Shutdown
Available in Space-Saving DSBGA Package
Key Specifications:
- Output Voltage at V_DD = 3.6 V,
  R_L = 1.5 µF + 10 Ω, THD+N ≤ 1%
  - 30 V_P-P(Typical)
- Quiescent Power Supply Current
  at 3.6 V (ALC Enabled)
  - 4 mA (Typical)
- Power Dissipation at 25 V_P–P, 1 W (Typical)
- Shutdown Current, 0.1 µA (Typical)

Analog supply (min) (V)	2.7
Analog supply (max) (V)	5.5
Speaker channels (max)	Mono
Architecture	Class H
Audio input type	Analog Input
Shutdown current (ISD) (µA)	0.1
PSRR (dB)	78
Iq (typ) (mA)	4
Operating temperature range (°C)	-40 to 85
Rating	Catalog