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LM53603-Q1 Datasheet(PDF) 6 Page - Texas Instruments

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Part # LM53603-Q1
Description  Step-Down Converters
Download  40 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM53603-Q1 Datasheet(HTML) 6 Page - Texas Instruments

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LM53602-Q1, LM53603-Q1
SNVSA42B – JUNE 2015 – REVISED MAY 2016
www.ti.com
Product Folder Links: LM53602-Q1 LM53603-Q1
Submit Documentation Feedback
Copyright © 2015–2016, Texas Instruments Incorporated
(1)
MIN and MAX limits are 100% production tested at 25°C. Limits over the operating temperature range are verified through correlation
using Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).
(2)
This is the input voltage at which the device will start to operate ("rising"). The device will shutdown when the input voltage goes below
this value minus the hysteresis.
(3)
This is the current used by the device, open loop. It does not represent the total input current of the system when in regulation. See
"Isupply" in System Characteristics
(4)
The FB pin is set to 5.5 V for this test.
(5)
Below this voltage on the EN input, the device will shut down completely.
7.5 Electrical Characteristics
Limits apply to the recommended operating junction temperature range of –40°C to 150°C, unless otherwise noted. Minimum
and maximum limits are verified through test, design, or statistical correlation. Typical values represent the most likely
parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated the following conditions
apply: VIN = 13.5 V.
PARAMETER
TEST CONDITIONS
MIN(1)
TYP
MAX(1)
UNIT
VFB
Initial reference voltage accuracy
for 5 V and 3.3 V options
VIN = 3.8 V to 36 V, FPWM,
TJ = 25°C
–1%
1%
VIN = 3.8 V to 36 V, FPWM
–1.25%
1.25%
VREF
Reference voltage for ADJ option
VIN = 3.8 V to 36 V, FPWM,
TJ = 25°C
0.993
1
1.007
V
VIN = 3.8 V to 36 V, FPWM,
TJ = -40°C to 125°C
0.99
1
1.01
VIN-operate
Minimum input voltage to
operate(2)
Rising
3.2
3.95
V
Falling
2.9
3.55
Hysteresis, below
0.34
IQ
Operating quiescent current;
measured at VIN pin.(3)(4)
VBIAS = 5 V,
TJ = -40°C to 125°C
8
13
µA
ISD
Shutdown quiescent current;
measured at VIN pin.
EN
≤ 0.4 V, TJ = 25°C
1.7
µA
EN
≤ 0.4 V, TJ = 85°C
2.8
EN
≤ 0.4 V, TJ = 125°C
3.5
IB
Current into the BIAS pin(4)
VBIAS = 5 V, FPWM = 3.3 V
47
78
µA
IEN
Current into EN pin
VIN = VEN = 13.5 V
2.3
µA
RFB
Resistance from FB to AGND
5 V option
1.5
M
Ω
Resistance from FB to AGND
3.3 V option
1
M
Ω
IFB
Bias current into FB pin
ADJ option
10
nA
VRESET
RESET upper threshold voltage
Rising, % of nominal Vout
105%
107%
110%
RESET lower threshold voltage
Falling, % of nominal Vout
92%
94%
96.5%
RESET lower threshold voltage
with respect to output voltage
Falling, % actual Vout
94.5%
95.7%
VRESET-
Hyst
RESET hysteresis as a percent of
output voltage set point
1.5%
VMIN
Minimum input voltage for proper
RESET function
50 µA pull-up to RESET pin, VEN = 0 V,
TJ = 25°C
1.5
V
VOL
Low level RESET pin output
voltage
50 µA pull-up to RESET pin, Vin = 1.5
V, EN = 0 V
0.4
V
0.5 mA pull-up to RESET pin, Vin = 13.5
V, EN = 0 V
0.4
1 mA pull-up to RESET pin, Vin = 13.5
V, EN = 3.3 V
0.4
VEN
Enable input threshold voltage
Rising
1.7
2
V
Hysteresis, below
0.45
0.55
VEN-off
Enable input threshold for full
shutdown(5)
EN input voltage required for complete
shutdown of the regulator, falling.
0.8
V
VLOGIC
Logic input levels on FPWM and
SYNC pins
VIH
1.5
V
VIL
0.4
IHS
High side switch current limit
LM53603-Q1
4.5
6.2
A
LM53602-Q1
2.4
4.4


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