JAJSGH4A November 2018 – July 2019 LM25180-Q1
ADVANCE INFORMATION for pre-production products; subject to change without notice.
デバイスごとのパッケージ図は、PDF版データシートをご参照ください。
The required input, output, and performance parameters for this application example are shown in Table 1.
DESIGN PARAMETER | VALUE |
---|---|
Input voltage range | 10 V to 36 V |
Input UVLO thresholds | 9.5 V on, 6.5 V off |
Output voltage | 5 V |
Rated load current, VIN = 24 V | 1 A |
Output voltage regulation | ±1.5% |
Output voltage ripple | < 100 mV |
The target full-load efficiency is 86% based on a nominal input voltage of 24 V and an isolated output voltage of 5 V. The LM25180-Q1 is chosen to deliver a fixed 5-V output voltage set by resistor RFB connected between the SW and FB pins. The input voltage turn-on and turn-off thresholds are established by RUV1 and RUV2. The required components are listed in Table 2.
REF DES | QTY | SPECIFICATION | VENDOR | PART NUMBER |
---|---|---|---|---|
CIN | 1 | 10 µF, 50 V, X7R, 1210, ceramic, AEC-Q200 | Taiyo Yuden | UMJ325KB7106KMHT |
COUT | 1 | 100 µF, 6.3 V, X7S, 1210, ceramic | Murata | GRM32EC70J107ME15 |
Taiyo Yuden | JMK325AC7107MM-P | |||
100 µF, 6.3 V, X5R, 1210, ceramic | TDK | C3225X5R0J107M250AC | ||
Würth Electronik | 885012109004 | |||
CSS | 1 | 47 nF, 16 V, X7R, 0402 | Std | Std |
DCLAMP | 1 | Zener, 24 V, 1 W, PowerDI-123, AEC-Q101 | DFLZ24Q-7 | Diodes Inc. |
DF | 1 | Switching diode, 75 V, 0.25 A, SOD-323 | CMDD4448 | Central Semi |
DFLY | 1 | Schottky diode, 40 V, 2 A, SOD-123 | FSV340FP | ONsemi |
DOUT | 1 | Zener, 5.6 V, 5%, SOD-523, AEC-Q101 | BZX585-C5V6 | Nexperia |
RFB | 1 | 158 kΩ, 1%, 0402 | Std | Std |
RSET | 1 | 12.1 kΩ, 1%, 0402 | Std | Std |
RTC | 1 | 130 kΩ, 1%, 0402 | Std | Std |
RUV1 | 1 | 536 kΩ, 1%, 0603 | Std | Std |
RUV2 | 1 | 100 kΩ, 1%, 0402 | Std | Std |
T1 | 1 | 30 µH, 2 A, turns ratio 3 : 1, 9.3 × 10.2 mm | Coilcraft | YA8779-BLD |
Würth Electronik | 750317605 | |||
30 µH, 2.6 A, turns ratio 3 : 1, 12.5 × 15.5 mm | Sumida | 12387-T151 | ||
40 µH, 2 A, turns ratio 3 : 1, 13.3 × 15.2 mm | Würth Electronik | 750313974 | ||
U1 | 1 | LM25180-Q1 PSR flyback converter, AEC-Q100 | Texas Instruments | LM25180QNGURQ1 |