LM2642MTC National Semiconductor, LM2642MTC Datasheet - Page 5

• Manufacturer Part Number: LM2642MTC
• Description: Voltage Regulator IC
• Manufacturer: National Semiconductor

Specifications of LM2642MTC

• No. Of Pins: 28
• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Package / Case: 28-TSSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

I
V
V
V
V
V
S
Gate Drive
I
I
I
I
R
R
Oscillator
F
Don_max
T
SS
Error Amplifier
sk_uvdelay
CBOOT
SC_DRV
sk_HDRV
sk_LDRV
Electrical Characteristics
osc
on_min
UVDelay
UVP
OVP
pwrbad
pwrgd
wx_R
HDRV
LDRV
Unless otherwise specified, V
over the specified operating junction temperature range, (-20˚C to +125˚C, if not otherwise specified). Specifications appearing
in plain type are measured using low duty cycle pulse testing with T
by design, test, or statistical analysis.
Symbol
OT_delta
UV_DELAY Sink Current
UV_DELAY Threshold
Voltage
FB1, FB2, Under
Voltage Protection Latch
Threshold
Hysteresis
V
Shutdown Latch
Threshold
Regulator Window
Detector Thresholds
(PGOOD1 from High to
Low)
Regulator Window
Detector Thresholds
(PGOOD1 from Low to
High)
SW1, SW2
ON-Resistance
CBOOTx Leakage
Current
HDRVx and LDRVx
Source Current
HDRVx Sink Current
LDRVx Sink Current
HDRV1 & 2 Source
On-Resistance
HDRV1 & 2 Sink
On-Resistance
LDRV1 & 2 Source
On-Resistance
LDRV1 & 2 Sink
On-Resistance
Oscillator Frequency
Maximum On-Duty Cycle
Minimum On-Time
HDRV1 and HDRV2
Delta On Time
OUT
Overvoltage
Parameter
IN
= 15V, GND = PGND = 0V, VLIN5 = VDD1 = VDD2. Limits appearing in boldface type apply
UV-DELAY = 0.4V
As a percentage of nominal output
voltage (falling edge)
As a percentage measured at V
V
As a percentage of output voltage
V
V
V
HDRVx=LDRVx=2.5V
V
HDRVX = 2.5V
V
LDRVX = 2.5V
V
V
V
V
V
-40˚C to 125˚C
V
HDRV1 and HDRV2
-40˚C to 125˚C
ON/SS1 = ON/SS2 = 2V
FB2
SW1
CBOOT1
CBOOT1
CBOOTx
CBOOTx
CBOOT1
SW1
CBOOT1
SW1
DD1
FB1
(Continued)
= V
= V
= V
= V
= V
DD1
FB2
= V
= V
= VDDx = 5V, V
= VDDx = 5V, V
= V
= V
SW2
SW2
SW2
CBOOT2
CBOOT2
CBOOT2
CBOOT2
= 1V, Measured at pins
Conditions
= 5V
= 0V
= 0V
= 2V
= 7V
= 5V, VSWx=0V,
= 5V,
= 5V,
5
SWx
SWx
A
= 25˚C (Note 6), (Note 7). Min/Max limits are guaranteed
= 0V,
= 0V,
FB1
,
257.5
95.64
86.5
91.5
Min
107
420
260
0.2
75
96
0.48
90.3
Typ
113
480
300
166
2.3
0.5
0.8
1.1
3.1
1.5
3.1
1.1
80
94
10
98
20
4
Max
94.5
97.0
122
535
340
340
150
1.2
86
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Units
kHz
mA
nA
ns
ns
%
%
%
%
%
%
Ω
Ω
Ω
Ω
Ω
V
A
A
A