NCV78723MW5R2G [ONSEMI]
NCV78723MW5 Addendum to NCV78723MW2 Datasheet;
| 型号： | NCV78723MW5R2G |
| 厂家： | 
ONSEMI |
| 描述： | NCV78723MW5 Addendum to NCV78723MW2 Datasheet |
| 文件： | 总2页 (文件大小：87K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NCV78723MW5 Addendum to
NCV78723MW2 Datasheet
NCV78723-ADD/D
www.onsemi.com
ADDENDUM
The device NCV78723MW5 is based on NCV78723MW2, with
difference that transition into fixed Toff time when VLED <
VLED_LMT is disabled and Toff time is always based on “Toff x
VLED = constant”.
PACKAGE PICTURE
24
1
There are the following differences between NCV78723MW5 and
NCV78723MW2 devices:
• Different behavior when VLED < VLED_LMT (see detailed
description and Table 1 of this addendum)
QFNW24 5x5 0.65P
CASE 484AF
• Different REVID (see new REVID information in this addendum)
• Different Package marking
MARKING DIAGRAM
• Test hot temperature Thot is 155°C for TC_VERSION = 0
1
ON
For the common specification of the parameters for
NCV78723MW5 and NCV78723MW2, please refer to the attached
datasheet for NCV78723MW2.
N78723−5
FAWLYYWW
G
Advantages of NCV78723MW5 compared to NCV78723MW2:
• No transition effects by the matrix switches (current regulation mode
does not change)
N78723
= Specific Device Code
= Fab Indicator
= Assembly Location
= Wafer Lot
F
A
WL
YY
WW
G
Disadvantages of NCV78723MW5 compared to NCV78723MW2:
• Toff time can be longer than original fixed Toff time for very low
VLED voltage (in situation when zero cross detector does not act
sooner)
= Year
= Work Week
= Pb−Free Package
Table 1. ORDERING INFORMATION
Device
Marking
Package
Shipping
NCV78723MW5R2G
N78723−5
QFNW24 5 × 5 with Step−Cut Wettable Flank
5,000 / Tape & Reel
(Pb-Free)
© Semiconductor Components Industries, LLC, 2020
1
Publication Order Number:
February, 2021 - Rev. 1
NCV78723−ADD/D
NCV78723−ADD/D
Transition into fixed Toff time disabled when VLED < VLED_LMT
On NCV78723MW5 fixed Toff time regulation is disabled for VLED < VLED_LMT and Toff time is always based on “Toff
x VLED = constant”. However Toff time can be terminated sooner by zero cross detector when current drops to zero.
The accuracy of Toff generation in new region is defined in this addendum:
Table 2. BUCK PARAMETRIC INFORMATION
Characteristic
Symbol
Conditions
Min
Typ
Max
Unit
TOFF time relative error (Notes 1, 2)
1. TC = Toff * VLED @ 1 V < VLED < 1.8 V.
TOFF_ERR
−20
20
%
2. TOFF_ERR for VLED < 1 V can’t be guaranteed.
The short detection feedback to the SPI registers is kept the same as on NCV78723MW2 device. When the VLED voltage
drops below the VLED_LMT minimum threshold (typical 1.8 V), the SHORTLEDx flag is set.
New REVID
REVID[7:0] for NCV78723MW5 device is 15hex (723 = 0, Full Mask Version = 2, N78723*2 = 1, Metal Tune = 1)
Test hot temperature Thot is 1555C for TC_VERSION = 0
TC_VERSION register (Bit 0 – ADDR_0x1D) on NCV78723MW5 device is 0. Testing hot temperature Thot is 155°C
instead of 125°C. This delta in Thot temperatures can slightly affect final current accuracy. See chapter ”SW Compensation
of the Buck Current Accuracy” in datasheet for original values.
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