TC1185

Features:

` Extremely Low Supply Current (50A, Typ.)
` Very Low Dropout Voltage
` Choice of 50mA (TC1014), 100mA (TC1015) and 150mA (TC1016) Output
` High Output Voltage Accuracy
` Standard or Custom Output Voltages
` Power Saving Shutdown Mode
` Reference Bypass Input for Ultra Low-Noise Operation
` Over Current and Over Temperature Protection
` Space-Saving 5-Pin SOT-23A Package
` Pin Compatible Upgrades for Bipolar Regulators

Application

· Battery Operated Systems
· Portable Computers
· Medical Instruments
· Instrumentation
· Cellular/GSM/PHS Phones
· Linear Post-Regulator for SMPS
· Pagers

Pinout






Specifications

Parameter NameValueMax Input Voltage6Output Voltage (v)1.8, 2.5, 2.6, 2.7, 2.8, 2.85, 3.0, 3.3, 3.6, 4.0, 5.0Typical Active Current (A)50Typical Dropout Voltage @ Max. lout (mV)270Typical Output Voltage Accuracy (%)0.5Output Capacitor TypeAluminum/Tantalum

Input Voltage...................................................... 6.5V
Output Voltage...........................(-0.3V) to (V_IN +0.3V)
Power Dissipation...............Internally Limited (Note 7)
Maximum Voltage on Any Pin .........V_IN +0.3V to -0.3V
Operating Temperature Range........-40 < T_J < 125
Storage Temperature......................... -65 to +150

Stresses above 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 above those indicated in the operation sections of the specifications is not implied.

Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.

Description

The TC1014, TC1015 and TC1185 are high accuracy (typically ±0.5%) CMOS upgrades for older (bipolar) low dropout regulators such as the LP2980. Designed specifically for battery-operated systems, the devices' CMOS construction eliminates wasted ground current, significantly extending battery life. Total supply current is typically 50 A at full load (20 to 60 times lower than in bipolar regulators!). Key features for the devices include ultra low-noise operation (plus optional Bypass input), fast response to step changes in load, and very low dropout voltage, typically 85 mV (TC1014), 180 mV (TC1015) and 270 mV (TC1185) at full load. Supply current is reduced to 0.5 A (max) and VOUT falls to zero when the shutdown input is low. The devices also incorporate both over-temperature and over-current protection. The TC1014, TC1015 and TC1185 are stable with an output capacitor of only 1F and have a maximum output current of 50 mA, 100 mA and 150 mA, respectively. For higher output versions, see the TC1107, TC1108 and TC1173 (IOUT = 300 mA) data sheets.