The TLVM365R15 and TLVM365R1 are 150-mA or 100-mA, 65-V input, synchronous step-down DC/DC power modules that combine power MOSFETs, integrated inductor, and boot capacitor in a compact and easy-to-use 3.5-mm × 4.5-mm × 2-mm, 11-pin QFN package. The small HotRod™ QFN package technology enhances the thermal performance and low EMI. The device features the ultra-low operating IQ of 4 μA at no load (24-V to 3.3-V VOUT). The TLVM365R15 and TLVM365R1 support fixed 3.3-V and 5-V outputs, as well as adjustable output voltages ranging from 1 V to 6 V. The devices only require four external components for a 3.3-V and 5-V fixed output design. The TLVM365R15 and TLVM365R1 are designed for excellent EMI performance and space constraint applications.
PART NUMBER | RATED OUTPUT CURRENT (1) |
---|---|
TLVM365R15 | 150 mA |
TLVM365R1 | 100 mA |
ORDERABLE PART NUMBER (1) | RATED CURRENT | OUTPUT VOLTAGE | EXTERNAL SYNC | FSW | SPREAD SPECTRUM |
---|---|---|---|---|---|
TLVM365R15RDNR | 150 mA | Fixed 3.3 V / adjustable (1 V – 6 V) | No (default PFM at light load) | Adjustable with RT resistor |
No |
TLVM365R1RDNR | 100 mA | Fixed 5-V / adjustable (1 V – 6 V) | No (default PFM at light load) | Adjustable with RT resistor |
No |
PIN | TYPE | DESCRIPTION | ||
---|---|---|---|---|
NO. | NAME | |||
1 | PGOOD | A | Open-drain power-good flag output. Connect to suitable voltage supply through a current limiting resistor. High = power OK, low = power bad. This pin goes low when EN = low. This pin can be open or grounded when not used. | |
2 | EN | A | Enable input to regulator. High = ON, Low = OFF.
Can be connected directly to VIN. Do not float this pin. | |
3 | VIN | P | Input supply to regulator. Connect a high-quality bypass capacitor, CIN, or capacitors directly to this pin and GND. | |
4 | VOUT | P | Output voltage. The pin is connected to the internal output inductor. Connect the pin to the output load and connect external output capacitors between the pin and GND. | |
5, 6 | SW | P | Power module switch node. Do not place any external component on this pin or connect to any signal. The amount of copper placed on these pins must be kept to a minimum to prevent issues with noise and EMI. | |
7 | BOOT | P | Bootstrap pin for internal high-side driver circuitry. Do not place any external component on this pin or connect to any signal. A 100-nF bootstrap capacitor is internally connected from this pin to SW within the module to provide the bootstrap voltage. | |
8 | VCC | P | Internal LDO output. Used as supply to internal control circuits. Do not connect to external loads. Can be used as logic supply for power-good flag. Connect a high-quality 1-µF capacitor from this pin to GND. | |
9 | FB/BIAS | A | Feedback input. When operating as an adjustable
output device, connect the mid-point of the feedback resistor divider to this pin.
Connect the upper resistor (RFBT) of the feedback divider to VOUT at the
desired point of regulation. Connect the lower resistor (RFBB) of the
feedback divider to GND. When connecting to a feedback resistor divider, keep this
FB trace short and as small as possible to avoid noise coupling. See Output Voltage
Selection for how to select feedback resistor divider values. Check
Device Comparison Table for more details. When operating with a
fixed output voltage, connect this pin directly to the VOUT rail. This connection
sets the output voltage to a fixed value and biases the internal circuitry. Do not float this pin or connect to ground. | |
10 | GND | G | Power ground terminal. Connect to system ground. Connect to CIN with short, wide traces. | |
11 | RT | A | As the RT variant, the switching frequency can be adjusted from 200 kHz to 2.2 MHz by placing an appropriately sized resistor between this pin and GND. See Section 7.3.2 for details. Do not float this pin. | |
A = Analog, P = Power, G = Ground |