SI-3033LSA

• 1 A Output Current
• Low Dropout Voltage
• LSTTL/CMOS-Compatible On/Off Control
  Less Than 1 µA "Sleep" Current
• Internal Foldback Overcurrent Limiting
• Internal Thermal Protection
• Surface-Mount Package

The SI-3033LSA is designed to meet the requirement for increased integration and reliability in low-voltage, high-current, linear regulator applications such as personal computers (PCs) and set-top boxes. Each device incorporates a monolithic low-level reference and control circuit with a high-current pnp transistor in a power multi-chip module (PMCM^TM). Regulated output voltages of 1.8V or 2.5V are also available.

The high-current pass element provides a low dropout voltage with output current to 1A. Regulator accuracy of ±2% and excellent temperature characteristics are provided. The logic-compatible ENABLE input gives the designer complete control over power up, power down, and standby or sleep.

Input Voltage, V_I .............................. 16 V
Supply Voltage, V_S ............................ 16 V
Continuous Output Current, I_O ........ 1.0 A*
Logic Input Voltage, V_E ......................... V_S
Package Power Dissipation,
P_D ........................................ See Graph
Output Junction Temperature,
T_J ............................................ +150°C†
Operating Temperature Range,
T_A ............................... -30°C to +100°C
Storage Temperature Range,
T_stg ............................. -30°C to +150°C
* Output current rating may be limited by duty cycle, ambient temperature, and heat sinking.Under any set of conditions, do not exceed the specified current rating or a junction temperature of 150°C.

† Fault conditions that produce excessive junction temperature will activate the device's thermal shutdown circuitry. These conditions can be tolerated but should be avoided.

The SI-3033LSA is designed to meet the requirement for increased integration and reliability in low-voltage, high-current, linear regulator applications such as personal computers (PCs) and set-top boxes. SI-3033LSA incorporates a monolithic low-level reference and control circuit with a high-current pnp transistor in a power multi-chip module (PMCM^TM). Regulated output voltages of 1.8V or 2.5V are also available.

The high-current pass element of SI-3033LSA provides a low dropout voltage with output current to 1A. Regulator accuracy of ±2% and excellent temperature characteristics are provided. The logic-compatible ENABLE input of SI-3033LSA gives the designer complete control over power up, power down, and standby or sleep.