LM2596
Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.
What the LM2596 does
The LM2596 is a 150-kHz, 3-A step-down voltage regulator available in fixed 3.3-V, 5-V, and 12-V versions or with an adjustable output from 1.2-V to 37-V. It operates with an input voltage up to 40 V and requires only four external components. The device features a 150-kHz fixed-frequency internal oscillator, TTL shutdown capability, and low power standby mode consuming typically 80 μA. It provides excellent line and load regulation with thermal shutdown and current-limit protection. These regulators are typically used in appliances, grid infrastructure, and home theater systems to drive high-current loads efficiently while allowing smaller filter components due to the higher switching frequency.
Datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 5 mA | 10 mA | See(6); iq; DEVICE PARAMETERS | TI datasheet, p. 7 — 7.9 Electrical Characteristics – All Output Voltage Versions |
| output voltage | 3.17 V | 3.3 V | 3.43 V | 4.75 V ≤ VIN≤ 40 V, 0.2 A ≤ ILOAD≤ 3 A; TJ = 25°C; vout; SYSTEM PARAMETERS(3)(see Figure 9-13 for test circuit) | TI datasheet, p. 6 — 7.5 Electrical Characteristics – 3.3-V Version |
| output current | — | 3 A | — | TI datasheet, p. 1 | |
| supply voltage range | 4.5 V | — | 40 V | TI datasheet, p. 5 — 7.3 Operating Conditions | |
| switching frequency | — | 150 kHz | — | TI datasheet, p. 7 — 7.9 Electrical Characteristics – All Output Voltage Versions | |
| operating temperature | -40 °C | — | 125 °C | TI datasheet, p. 5 — 7.3 Operating Conditions | |
| input bias current | — | 10 nA | 50 nA | Adjustable version only, VFB = 1.3 V; TJ = 25°C; ib; DEVICE PARAMETERS | TI datasheet, p. 7 — 7.9 Electrical Characteristics – All Output Voltage Versions |
| standby current | — | 80 µA | — | Typical, low power standby mode | TI datasheet, p. 1 |
| dropout voltage | — | 950 mV | — | ILOAD = 1 A, TJ = 25 °C | TI datasheet, p. 8 |
| output count | — | 1 | — | TI datasheet, p. 1 |
Closest matches to LM2596
Frequently asked questions
What is the dropout voltage of the LM2596 at ILOAD = 1 A and TJ = 25 °C?
The dropout voltage is 950 mV.
What is the input bias current for the adjustable version of the LM2596 at VFB = 1.3 V and TJ = 25°C?
The input bias current is 10 nA.
What is the maximum operating temperature for the LM2596?
The maximum operating temperature is 125 °C.
How many outputs does the LM2596 have?
The LM2596 has 1 output.
What is the maximum output current of the LM2596?
The maximum output current is 3 A.
What is the output voltage of the LM2596 under the conditions of 4.75 V ≤ VIN≤ 40 V, 0.2 A ≤ ILOAD≤ 3 A, TJ = 25°C, and vout; SYSTEM PARAMETERS(3)(see Figure 9-13 for test circuit)?
The output voltage is 3.3 V.
What is the quiescent current of the LM2596?
The quiescent current is 5 mA, as specified in See(6); iq; DEVICE PARAMETERS.
What is the typical standby current in low power standby mode?
The typical standby current is 80 µA.
What is the maximum supply voltage for the LM2596?
The supply voltage range is 40 V.
What is the switching frequency of the LM2596?
The switching frequency is 150 kHz.