buk217-50y NXP Semiconductors, buk217-50y Datasheet - Page 3

• Manufacturer Part Number: buk217-50y
• Description: Buk212-50y; Buk217-50y Single Channel High-side Topfet Tm
• Manufacturer: NXP Semiconductors

Philips Semiconductors
3. Block diagram
4. Functional description
Table 3:
Abbreviations: L = logic LOW; H = logic HIGH; X = don’t care; 0 = condition not present; 1 = condition present;
UV = undervoltage; OV = overvoltage; LC = low current or open circuit load; SC = short circuit; OT = overtemperature
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9397 750 10768
Product data
Fig 4. Elements of the high-side TOPFET switch.
Input
The status will continue to indicate OT (even if the input goes LOW) until the device cools below the reset threshold.
See “Overtemperature protection” characteristics in
4
2
1
H
H
H
H
H
H
L
status
input
ground
Truth table
UV
X
0
0
1
0
0
0
Supply
OV
X
0
0
0
1
0
0
CONTROL
LOGIC
LC
X
X
X
0
1
0
0
Load
SC
X
X
0
0
0
1
0
VOLTAGE REGULATOR
UNDERVOLTAGE
SHORT CIRCUIT
OVERVOLTAGE
TEMPERATURE
Rev. 01 — 17 March 2003
CHARGE PUMP
LOW CURRENT
Table
PROTECTION
PROTECTION
PROTECTION
SENSOR
DETECT
OT
6.
X
X
X
0
0
0
1
BUK212-50Y; BUK217-50Y
output
Load
OFF
OFF
OFF
OFF
OFF
ON
ON
R G
CURRENT LIMIT
Status Operating mode
H
H
H
H
L
L
L
Single channel high-side TOPFET™
off
on & normal
on & low current detect
supply undervoltage lockout
supply overvoltage shutdown
SC tripped
OT shutdown
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
03pa33
battery
MOSFET
load
POWER
3/mb
5
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3 of 16
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