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Application Note
65AN111E Rev.001
Dec.2022
©2022 ROHM Co., Ltd.
SPICE Modeling Report
For Automotive 45 V Input
50 mA Fixed Output LDO Regulators
BD7xxL05G-C Series
General Description
In this report, the characteristics that can be confirmed by the simulation using the SPICE model of the regulator IC BD7xxL05G-
C series will be described.
Simulation Environment
◼ Circuit Simulator : PSpice / Cadence Design System, Inc.
◼ Version Information : 17.2-2016
◼ OS Information : Windows 10 64-bit Edition
File Information
◼ Library File Name : BD7xxL05G.lib
◼ Symbol File Name : BD7xxL05G.olb
◼ Subcircuit and Symbol
Table 1 Correspondence Table
Product Name
Subcircuit
Symbol
BD725L05G-C
BD725L05G
BD725L05G
BD730L05G-C
BD730L05G
BD730L05G
BD733L05G-C
BD733L05G
BD733L05G
BD750L05G-C
BD750L05G
BD750L05G
Caution
◼ These model characteristics are specifically at Ta = 25 °C. Thus, the simulation result with temperature variances may
significantly differ from the result with the one done at actual application board (actual measurement).
◼ The simulation result and characteristics described in this report may differ depending on the board design.
It is recommended to perform the measurement on the actual board to verify the result.
◼ The values from the simulation results are not guaranteed. Use these results as a guide for your design.
◼ Actual measurement was done using a specific sample, thus the measured data is just as a reference.
BD7xxL05G-C Series SPICE Modeling Report
Application Note
2/11
65AN111E Rev.001
Dec.2022
©2022 ROHM Co., Ltd.
BD7xxL05G-C Spice Model
◼ Pin Information
Figure 1 Symbol of BD7xxL05G
Table 2 Subcircuit Pin Table
Pin No.
Pin Name
1.
N.C.1
2.
GND
3.
N.C.2
4.
VIN
5.
VOUT
Verifiable Characteristics
◼ Electrical Characteristics (vs. Datasheet) ································································ 3
◼ Characteristic in SPICE (vs. Measured Waveform) ···················································· 4
✓ 1. Circuit Current (V
IN
= 13.5 V) ··························································· 4
✓ 2. Output Voltage (V
IN
= 13.5 V, I
OUT
= 0 mA) ········································· 5
✓ 3. Dropout Voltage (V
IN
= 4.75 V, I
OUT
= 0 mA to 50 mA) ··························· 6
✓ 4. Ripple Rejection ········································································��·· 7
✓ 5. Line Regulation (V
IN
= 6 V to 42 V) ··················································· 8
✓ 6. Load Regulation (I
OUT
= 100 μA to 50 mA) ·········································· 9
✓ 7. Over Current Protection ································································· 10