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Part No.	ILC6382
Manufacturer	IMPALA
Size	1Mb
Pages	19 pages
Description	1-CELL TO 3-CELL BOOST WITH TRUE LOAD DISCONNECT, 3.3V, 5V OR ADJUSTABLE OUTPUT

Datasheet Summary with AI

1. General Description & Function:

️· IC Type: Boost converter (step-up converter)
️· Architecture: Dual PWM/PFM architecture - offers the spectral predictability of PWM for noise-sensitive applications and high efficiency in standby modes (using PFM).
️· Versions: Available in two versions:
- ILC6382-XX: Fixed output voltage.
- ILC6382-ADJ: Adjustable output voltage (using an external resistor divider).

2. Key Features and Functionality:

️· External Frequency Synchronization: Allows external clock to control the internal oscillator (150kHz - 500kHz).
️· Low Battery Detector (LBD):
- Monitors battery voltage.
- Open-drain output.
- Built-in delay (120ms) to prevent false triggering from transient voltage spikes.
- Can be configured to monitor voltages both above and below 1.25V using external circuitry.
- Disables when in shutdown mode or PFM mode.
️· Power Good Output (POK):
- Indicates when the output voltage is within regulation limits (typically 95% of the set output voltage).
- Open-drain output (requires a pull-up resistor).
️· Shutdown Control:
- Implemented via the LBI pin. A low voltage (<0.4V) on LBI puts the converter into shutdown.
- Shutdown disconnects the output from the input, minimizing leakage current.
️· Adjustable Output Voltage (ILC6382-ADJ):
- Output voltage is set by: `Vout = Vfb * (1 + R1/R2)` where `Vfb` is approximately 1.25V.
️· Negative Voltage Output: Circuitry can be implemented to generate a negative output voltage.

3. Operation Modes:

️· PWM Mode: Used for most operation, providing predictable frequency for filtering and noise reduction.
️· PFM Mode: Engaged at low currents for improved efficiency (pulse skipping).
️· Shutdown Mode: Disconnects input from output for minimal leakage current.

4. Important Notes & Considerations:

️· External Components: Requires external resistors for output voltage adjustment (ILC6382-ADJ) and pull-up resistors for open-drain outputs (POK, LBD).
️· Frequency Synchronization: Connect pin 4 to ground or VIN if not using external synchronization.
️· LBD/Shutdown: Functions are dependent on operation mode and the state of the shutdown pin.