JAJS715 データシート

JAJS715O July 2000 – July 2015 LM3488

PRODUCTION DATA.

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）

DGK|8
- MPDS028E

サーマルパッド・メカニカル・データ

発注情報

6 Specifications

6.1 Absolute Maximum Ratings ⁽¹⁾

		MIN	MAX	UNIT
Input voltage			45	V
FB pin voltage		–0.4 < V_FB	V_FB < 7	V
FA/SYNC/SD pin voltage		–0.4 < V_FA/SYNC/SD	V_FA/SYNC/SD < 7	V
Peak driver output current (< 10 µs)			1	A
Power dissipation			Internally Limited
Junction temperature			150	°C
Lead temperature	Vapor Phase (60 s)		215	°C
Lead temperature	Infared (15 s)		260	°C
DR pin voltage		−0.4 ≤ VDR	VDR ≤ 8	V
I_LIM pin voltage			600	mV

6.2 ESD Ratings : LM3488

			MIN	MAX	UNIT
V_(ESD)	Electrostatic discharge	Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins⁽¹⁾	–2000	2000	V
V_(ESD)	Electrostatic discharge	Charged device model (CDM), per JEDEC specification JESD22-C101, all pins⁽²⁾	–750	750	V

(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.

(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.3 ESD Ratings: LM3488-Q1

				MIN	MAX	UNIT
V_(ESD)	Electrostatic discharge	Human body model (HBM), per AEC Q100-002⁽¹⁾		–2000	2000	V
		Charged device model (CDM), per AEC Q100-011	Corner pins (1, 4, 5, and 8)	–750	750
		Charged device model (CDM), per AEC Q100-011	Other pins	–750	750

(1) AEC Q100-002 indicates HBM stressing is done in accordance with the ANSI/ESDA/JEDEC JS-001 specification.

6.4 Recommended Operating Conditions

	MIN	MAX	UNIT
Supply Voltage	2.97 ≤ V_IN	V_IN ≤ 40	V
Junction Temperature Range	−40 ≤ T_J	T_J ≤ 125	°C
Switching Frequency	100 ≤ F_SW	F_SW ≤ 1	kHz/MHz

6.5 Thermal Information

THERMAL METRIC⁽¹⁾		LM3488, LM3488-Q1	UNIT
		DGK
		8 PINS
R_θJA	Junction-to-ambient thermal resistance	160	°C/W
R_θJC(top)	Junction-to-case (top) thermal resistance	50
R_θJB	Junction-to-board thermal resistance	77
ψ_JT	Junction-to-top characterization parameter	4.7
ψ_JB	Junction-to-board characterization parameter	76

(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

6.6 Electrical Characteristics

Unless otherwise specified, V_IN = 12 V, R_FA = 40 kΩ, T_J = 25°C

	PARAMETER	TEST CONDITIONS	MIN	TYP	MAX	UNIT
V_FB	Feedback Voltage	V_COMP = 1.4 V, 2.97 ≤ V_IN ≤ 40 V	1.2507	1.26	1.2753	V
V_FB	Feedback Voltage	V_COMP = 1.4 V, 2.97 ≤ V_IN ≤ 40 V, −40°C ≤ T_J ≤ 125°C	1.24		1.28	V
ΔV_LINE	Feedback Voltage Line Regulation	2.97 ≤ V_IN ≤ 40 V		0.001		%/V
ΔV_LOAD	Output Voltage Load Regulation	I_EAO Source/Sink		±0.5		%/V (max)
V_UVLO	Input Undervoltage Lock-out			2.85		V
V_UVLO	Input Undervoltage Lock-out	−40°C ≤ T_J ≤ 125°C			2.97	V
V_UV(HYS)	Input Undervoltage Lock-out Hysteresis			170		mV
V_UV(HYS)	Input Undervoltage Lock-out Hysteresis	−40°C ≤ T_J ≤ 125°C	130		210	mV
F_nom	Nominal Switching Frequency	R_FA = 40 KΩ		400		kHz
F_nom	Nominal Switching Frequency	R_FA = 40 KΩ, −40°C ≤ T_J ≤ 125°C	360		430	kHz
R_{DS1 (ON)}	Driver Switch On Resistance (top)	I_DR = 0.2A, V_IN= 5 V		16		Ω
R_{DS2 (ON)}	Driver Switch On Resistance (bottom)	I_DR = 0.2A		4.5		Ω
V_{DR (max)}	Maximum Drive Voltage Swing⁽³⁾	V_IN < 7.2 V		V_IN		V
V_{DR (max)}	Maximum Drive Voltage Swing⁽³⁾	V_IN ≥ 7.2 V		7.2		V
D_max	Maximum Duty Cycle⁽⁴⁾			100%
T_min (on)	Minimum On Time			325		nsec
T_min (on)	Minimum On Time	−40°C ≤ T_J ≤ 125°C	230		550	nsec
I_SUPPLY	Supply Current (switching)	See ⁽⁶⁾		2.7		mA
I_SUPPLY	Supply Current (switching)	See ⁽⁶⁾, −40°C ≤ T_J ≤ 125°C			3.0	mA
I_Q	Quiescent Current in Shutdown Mode	V_FA/SYNC/SD = 5 V⁽⁷⁾, V_IN = 5 V		5		µA
I_Q	Quiescent Current in Shutdown Mode	V_FA/SYNC/SD = 5 V⁽⁷⁾, V_IN = 5 V, −40°C ≤ T_J ≤ 125°C			7	µA
V_SENSE	Current Sense Threshold Voltage	V_IN = 5 V	135	156	180	mV
V_SENSE	Current Sense Threshold Voltage	V_IN = 5 V, −40°C ≤ T_J ≤ 125°C	125		190	mV
V_SC	Short-Circuit Current Limit Sense Voltage	V_IN = 5 V		343		mV
V_SC	Short-Circuit Current Limit Sense Voltage	V_IN = 5 V, −40°C ≤ T_J ≤ 125°C	250		415	mV
V_SL	Internal Compensation Ramp Voltage	V_IN = 5 V		92		mV
V_SL	Internal Compensation Ramp Voltage	V_IN = 5 V, −40°C ≤ T_J ≤ 125°C	52		132	mV
V_SL ratio	V_SL/V_SENSE		0.30	0.49	0.70
V_OVP	Output Overvoltage Protection (with respect to feedback voltage) ⁽⁵⁾	V_COMP = 1.4 V	32	50	78	mV
V_OVP		V_COMP = 1.4 V, −40°C ≤ T_J ≤ 125°C	25		85	mV
V_OVP(HYS)	Output Over-Voltage Protection Hysteresis⁽⁵⁾	V_COMP = 1.4 V		60		mV
V_OVP(HYS)	Output Over-Voltage Protection Hysteresis⁽⁵⁾	V_COMP = 1.4 V, −40°C ≤ T_J ≤ 125°C	20		110	mV
Gm	Error Ampifier Transconductance	V_COMP = 1.4 V, I_EAO = 100 µA (Source/Sink)	600	800	1000	µmho
Gm	Error Ampifier Transconductance	V_COMP = 1.4 V, I_EAO = 100 µA (Source/Sink), −40°C ≤ T_J ≤ 125°C	365		1265	µmho
A_VOL	Error Amplifier Voltage Gain	V_COMP = 1.4 V, I_EAO = 100 µA (Source/Sink)		38		V/V
A_VOL	Error Amplifier Voltage Gain	V_COMP = 1.4 V, I_EAO = 100 µA (Source/Sink), −40°C ≤ T_J ≤ 125°C	26		44	V/V
I_EAO	Error Amplifier Output Current (Source/ Sink)	Source, V_COMP = 1.4 V, V_FB = 0 V	80	110	140	µA
		Source, V_COMP = 1.4 V, V_FB = 0 V, −40°C ≤ T_J ≤ 125°C	50		180	µA
		Sink, V_COMP = 1.4 V, V_FB = 1.4 V	−100	−140	−180	µA
		Sink, V_COMP = 1.4 V, V_FB = 1.4 V, −40°C ≤ T_J ≤ 125°C	−85		−185	µA
V_EAO	Error Amplifier Output Voltage Swing	Upper Limit: V_FB = 0 V, COMP Pin = Floating		2.2		V
		Upper Limit: V_FB = 0 V, COMP Pin = Floating, −40°C ≤ T_J ≤ 125°C	1.8		2.4	V
		Lower Limit: V_FB = 1.4 V		0.56		V
		Lower Limit: V_FB = 1.4 V, −40°C ≤ T_J ≤ 125°C	0.2		1.0	V
T_SS	Internal Soft-Start Delay	V_FB = 1.2 V, V_COMP = Floating		4		ms
T_r	Drive Pin Rise Time	Cgs = 3000 pf, V_DR = 0 to 3 V		25		ns
T_f	Drive Pin Fall Time	Cgs = 3000 pf, V_DR = 0 to 3 V		25		ns
VSD	Shutdown and Synchronization signal threshold ⁽²⁾	Output = High		1.27		V
		Output = High, −40°C ≤ T_J ≤ 125°C			1.4	V
		Output = Low		0.65		V
		Output = Low, −40°C ≤ T_J ≤ 125°C	0.3			V
I_SD	Shutdown Pin Current	V_SD = 5 V		−1		µA
I_SD	Shutdown Pin Current	V_SD = 0 V		+1		µA
I_FB	Feedback Pin Current			15		nA
TSD	Thermal Shutdown			165		°C
T_sh	Thermal Shutdown Hysteresis			10		°C

(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Recommended Operating Conditions are conditions under which operation of the device is intended to be functional. For specifications and test conditions, see the Electrical Characteristics.

(2) The FA/SYNC/SD pin should be pulled to V_IN through a resistor to turn the regulator off.

(3) The voltage on the drive pin, V_DR is equal to the input voltage when input voltage is less than 7.2 V. V_DR is equal to 7.2 V when the input voltage is greater than or equal to 7.2 V.

(4) The limits for the maximum duty cycle can not be specified since the part does not permit less than 100% maximum duty cycle operation.

(5) The over-voltage protection is specified with respect to the feedback voltage. This is because the over-voltage protection tracks the feedback voltage. The over-voltage thresold can be calculated by adding the feedback voltage, V_FB to the over-voltage protection specification.

(6) For this test, the FA/SYNC/SD Pin is pulled to ground using a 40K resistor .

(7) For this test, the FA/SYNC/SD Pin is pulled to 5 V using a 40K resistor.