NCV8881PWR2G ON Semiconductor, NCV8881PWR2G Datasheet - Page 20

• Manufacturer Part Number: NCV8881PWR2G
• Description: IC SMPS WITH WATCHDOG 16SOIC
• Manufacturer: ON Semiconductor
• Series: -r

Specifications of NCV8881PWR2G

• Topology: Step-Down (Buck) (1), Linear (LDO) (2)
• Function: Automotive
• Number Of Outputs: 3
• Frequency - Switching: 170kHz
• Voltage/current - Output 1: 3.3 V ~ 8 V, 1.5A
• Voltage/current - Output 2: 5V, 100mA
• Voltage/current - Output 3: 8.5V, 40mA
• W/led Driver: No
• W/supervisor: No
• W/sequencer: No
• Voltage - Supply: 5 V ~ 19 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.295", 7.50mm Width) Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

ENABLE (EN PIN)
maintain a standby mode which keeps the switching
regulator, Watchdog Circuit, and LDO outputs off, and
minimizes supply current. In this state the RESB output is
low. A high logic level at the EN input activates all functions.
Upon EN exceeding V
established, followed by soft−start of the switching
OUTPUT
OUTPUT
ENABLE
ENABLE
After VIN rises above V
SMPS
SMPS
8P5
5P0
8P5
5P0
VIN
VIN
8P5 Regulation Monitor Threshold
5P0 Regulation Monitor Threshold
8P5 Regulation Monitor Threshold
5P0 Regulation Monitor Threshold
0
0
1
1
ENSTHH
STRT
2
2
Figure 43. Enable High Time Long Enough to be Latched
, 5P0 and 8P5 voltages are
, EN below V
Figure 42. Enable High Time Insufficient to be Latched
3
3
ENSTHL
4
4
http://onsemi.com
will
5
5
20
regulator. Once either the 5P0 or 8P5 LDO reaches
regulation, EN dropping below V
the SS Timer expires. Thereafter, if the SMPS output voltage
is out of regulation, or WDI pulse period exceeds the
Watchdog Delay time t
part in standby mode.
6
6
7
7
8
8
WD
, EN below V
9
9
ENSTHL
10
10
has no effect until
ENSTHL
11
11
puts the
12
12