LM26001QMXAX/NOPB National Semiconductor, LM26001QMXAX/NOPB Datasheet - Page 4

• Manufacturer Part Number: LM26001QMXAX/NOPB
• Description: IC REG SW 1.5A W/SLEEP 16-TSSOP
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: Step-Down (Buck)r

Specifications of LM26001QMXAX/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.25 ~ 35 V
• Current - Output: 1.5A
• Frequency - Switching: 150kHz ~ 500kHz
• Voltage - Input: 4 ~ 38 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Power - Output: 2.6W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM26001QMXAX

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Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: The maximum allowable power dissipation is a function of the maximum junction temperature, T
and the ambient temperature, T
maximum power dissipation of 2.6W is determined using T
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin. The machine model is a 200pF capacitor discharged
directly into each pin. The charged device model is per JESD22-C101-C.
Note 4: Below 4.0V input, power dissipation may increase due to increased R
within specification. A minimum of 3.9V (typical) is also required for startup.
Note 5: All room temperature limits are 100% production tested. All limits at temperature extremes are guaranteed through correlation using standard Statistical
Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
Note 6: Iq and ISD specify the current into the VIN pin. IBIAS is the current into the VBIAS pin when the VBIAS voltage is greater than 3V. All quiescent current
specifications apply to non-switching operation.
Note 7: The absolute maximum specification applies to DC voltage. An extended negative voltage limit of -2V applies for a pulse of up to 1µs, and -1V for a pulse
of up to 20µs.
F
T
T
TH
TH
I
Protection
I
V
F_min_sc
V
I
R
V
TSD
θ
Logic
Vth
I
V
I
EA
gm
I
V
BOOT
LIMPK
PGOOD_HI
EN_Source
FPWM
COMP
JA
SYNC_DN
OFFMIN
ONMIN
FB_SC
TH_PGOOD
DS_PGOOD
UVLO
TH_FPWM
COMP
SLEEP_HYS
WAKE
EN
Symbol
Lower frequency synchronization
range
Minimum Off-time
Minimum On-time
Sleep mode threshold hysteresis
Wake up threshold
BOOT pin leakage current
Peak Current Limit
Short circuit frequency foldback
threshold
Min Frequency in foldback
Power Good Threshold
PGOOD hysteresis
PGOOD leakage current
PGOOD on resistance
Under-voltage Lock-Out Threshold
Thermal Shutdown Threshold
Thermal resistance
Enable Threshold voltage
Enable hysteresis
EN source current
FPWM threshold
FPWM leakage current
Error amp trans-conductance
COMP source current
COMP sink current
COMP pin voltage range
A
. The maximum allowable power dissipation at any ambient temperature is calculated using: P
Parameter
A
= 25°C, θ
JA
= 38°C/W, and T
As compared to nominal f
VFB rising, % of TH
Measured at falling FB, COMP =
0.6V
BOOT = 16V, SW = 10V
Measured at FB falling
VFB < 0.3V
Measured at FB, PGOOD rising
PGOOD = 5V
PGOOD sink current = 500 µA
Vin falling , shutdown, VDD =
VIN
Vin rising, soft-start, VDD = VIN
Power dissipation = 1W, 0 lfpm
air flow
EN = 0V
FPWM = 5V
VCOMP = 0.9V
VCOMP = 0.9V
DS(ON)
4
. Therefore, a minimum input voltage of 4.0V is required to operate continuously
Conditions
J_MAX
= 125°C.
WAKE
J_MAX
SW
, the junction-to-ambient thermal resistance, θ
1.85
2.60
3.60
0.64
Min
400
0.8
0.8
89
2
D_MAX
0.0006
101.2
1.234
0.87
Typ
365
155
160
120
670
2.5
0.2
2.9
3.9
1.2
4.5
1.2
71
92
64
38
35
56
56
7
= (T
J_MAX
1000
Max
3.20
4.20
1.27
-20
5.0
3.2
1.4
1.6
95
8
- T
A
) /θ
JA
µmho
°C/W
Unit
kHz
mV
µA
nA
µA
nA
µA
µA
. The
ns
ns
°C
%
%
%
%
Ω
V
A
V
V
V
V
V
JA
,